diff --git a/app/controllers/france_connect/particulier_controller.rb b/app/controllers/france_connect/particulier_controller.rb
index 8b536a01a..e0a7740de 100644
--- a/app/controllers/france_connect/particulier_controller.rb
+++ b/app/controllers/france_connect/particulier_controller.rb
@@ -2,8 +2,8 @@
 
 class FranceConnect::ParticulierController < ApplicationController
   before_action :redirect_to_login_if_fc_aborted, only: [:callback]
-  before_action :securely_retrieve_fci, only: [:merge, :merge_with_existing_account, :merge_with_new_account, :resend_and_renew_merge_confirmation, :associate_user]
-  before_action :securely_retrieve_fci_from_email_merge_token, only: [:mail_merge_with_existing_account]
+  before_action :securely_retrieve_fci, only: [:merge_using_fc_email, :merge_using_password, :send_email_merge_request]
+  before_action :securely_retrieve_fci_from_email_merge_token, only: [:merge_using_email_link]
   before_action :set_user_by_confirmation_token, only: [:confirm_email]
 
   def login
@@ -15,130 +15,98 @@ class FranceConnect::ParticulierController < ApplicationController
   end
 
   def callback
-    fci = FranceConnectService.find_or_retrieve_france_connect_information(params[:code])
+    @fci = FranceConnectService.find_or_retrieve_france_connect_information(params[:code])
 
-    if fci.user.nil?
-      preexisting_unlinked_user = User.find_by(email: sanitize(fci.email_france_connect))
+    if @fci.user.nil?
+      preexisting_unlinked_user = User.find_by(email: sanitize(@fci.email_france_connect))
 
       if preexisting_unlinked_user.nil?
-        merge_token = fci.create_merge_token!
-        render :choose_email, locals: { france_connect_email: fci.email_france_connect, merge_token: }
-
-      elsif !preexisting_unlinked_user.can_france_connect?
-        fci.destroy
-        redirect_to new_user_session_path, alert: t('errors.messages.france_connect.forbidden_html', reset_link: new_user_password_path)
+        @fci.create_merge_token!
+        render :choose_email
+      elsif preexisting_unlinked_user.can_france_connect?
+        @fci.create_merge_token!
+        render :merge
       else
-        merge_token = fci.create_merge_token!
-        redirect_to france_connect_particulier_merge_path(merge_token)
+        destroy_fci_and_redirect_to_login(@fci)
       end
     else
-      user = fci.user
-
-      if user.can_france_connect?
-        fci.update(updated_at: Time.zone.now)
-        connect_france_connect_particulier(user)
+      if @fci.user.can_france_connect?
+        @fci.update(updated_at: Time.zone.now)
+        connect_france_connect_particulier(@fci.user)
       else
-        fci.destroy
-        redirect_to new_user_session_path, alert: t('errors.messages.france_connect.forbidden_html', reset_link: new_user_password_path)
+        destroy_fci_and_redirect_to_login(@fci)
       end
     end
 
   rescue Rack::OAuth2::Client::Error => e
     Rails.logger.error e.message
-    redirect_france_connect_error_connection
+    redirect_to(new_user_session_path, alert: t('errors.messages.france_connect.connexion'))
   end
 
-  def associate_user
-    email = use_fc_email? ? @fci.email_france_connect : params[:alternative_email]
+  def send_email_merge_request
+    @fci.update(requested_email: sanitized_email_params)
 
-    @fci.associate_user!(email)
-    user = @fci.user
-
-    @fci.send_custom_confirmation_instructions(user)
-    @fci.delete_merge_token!
-    sign_only(user)
-
-    render :confirmation_sent, locals: { email:, destination_path: destination_path(user) }
-  rescue ActiveRecord::RecordInvalid => e
-    if e.record.errors.where(:email, :taken)
-      user = User.find_by(email: e.record.email)
-      @fci.send_custom_confirmation_instructions(user)
-      @fci.delete_merge_token!
-      render :confirmation_sent, locals: { email: user.email, destination_path: destination_path(user) }
-    else
-      redirect_to new_user_session_path, alert: t('errors.messages.france_connect.unknown_error')
-    end
-  end
-
-  def merge
-  end
-
-  def merge_with_existing_account
-    user = User.find_by(email: sanitized_email_params)
-
-    if user.present? && user.valid_for_authentication? { user.valid_password?(password_params) }
-      if !user.can_france_connect?
-        flash.alert = t('errors.messages.france_connect.forbidden_html', reset_link: new_user_password_path)
-
-        redirect_to root_path
-      else
-        @fci.update(user: user)
-        @fci.delete_merge_token!
-        @fci.delete_email_merge_token!
-
-        flash.notice = t('france_connect.particulier.flash.connection_done', application_name: Current.application_name)
-        connect_france_connect_particulier(user)
-      end
-    else
-      flash.alert = t('france_connect.particulier.flash.invalid_password')
-    end
-  end
-
-  def mail_merge_with_existing_account
-    user = User.find_by(email: sanitize(@fci.email_france_connect.downcase))
-    if user.can_france_connect?
-      @fci.update(user: user)
-      @fci.delete_merge_token!
-      user.update(email_verified_at: Time.zone.now)
-      flash.notice = t('france_connect.particulier.flash.connection_done', application_name: Current.application_name)
-      connect_france_connect_particulier(user)
-    else # same behaviour as redirect nicely with message when instructeur/administrateur
-      @fci.destroy
-      redirect_to new_user_session_path, alert: t('errors.messages.france_connect.forbidden_html', reset_link: new_user_password_path)
-    end
-  end
-
-  def merge_with_new_account
-    user = User.find_by(email: sanitized_email_params)
-
-    if user.nil?
-      @fci.associate_user!(sanitized_email_params)
-      @fci.delete_merge_token!
-      @fci.send_custom_confirmation_instructions(@fci.user)
-      flash.notice = t('france_connect.particulier.flash.connection_done_verify_email', application_name: Current.application_name)
-      connect_france_connect_particulier(@fci.user)
-    else
-      @email = sanitized_email_params
-      @merge_token = merge_token_params
-    end
-  end
-
-  def resend_and_renew_merge_confirmation
     @fci.create_email_merge_token!
     UserMailer.france_connect_merge_confirmation(
-      @fci.email_france_connect,
+      sanitized_email_params,
       @fci.email_merge_token,
       @fci.email_merge_token_created_at
     )
       .deliver_later
 
-    merge_token = @fci.create_merge_token!
-    redirect_to france_connect_particulier_merge_path(merge_token),
-                notice: t('france_connect.particulier.flash.confirmation_mail_sent')
+    redirect_to root_path, notice: t('france_connect.particulier.flash.confirmation_mail_sent')
   end
 
+  def merge_using_fc_email
+    @fci.safely_associate_user!(@fci.email_france_connect)
+
+    sign_in(@fci.user)
+
+    @fci.send_custom_confirmation_instructions
+
+    render :confirmation_sent, locals: { email: @fci.email_france_connect, destination_path: destination_path(@fci.user) }
+  end
+
+  def merge_using_password
+    user = User.find_by(email: sanitize(@fci.email_france_connect))
+
+    if user.present? && !user.can_france_connect?
+      return destroy_fci_and_redirect_to_login(@fci)
+    end
+
+    if user.present? && user.valid_for_authentication? { user.valid_password?(params[:password]) }
+      @fci.safely_update_user(user:)
+
+      flash.notice = t('france_connect.particulier.flash.connection_done', application_name: Current.application_name)
+      connect_france_connect_particulier(user)
+    else
+      flash.alert = t('france_connect.particulier.flash.invalid_password')
+    end
+  end
+
+  def merge_using_email_link
+    user = User.find_by(email: @fci.requested_email)
+
+    if user.present? && !user.can_france_connect?
+      return destroy_fci_and_redirect_to_login(@fci)
+    end
+
+    if user.nil?
+      @fci.safely_associate_user!(@fci.requested_email)
+    else
+      @fci.safely_update_user(user:)
+    end
+
+    @fci.user.update(email_verified_at: Time.zone.now)
+
+    flash.notice = t('france_connect.particulier.flash.connection_done', application_name: Current.application_name)
+    connect_france_connect_particulier(@fci.user)
+  end
+
+  # TODO mutualiser avec le controller Users::ActivateController
+  # pour toute la partie de confirmation de compte
   def confirm_email
-    if @user.confirmation_sent_at && @user.confirmation_sent_at > 2.days.ago
+    if @user.confirmation_sent_at && 2.days.ago < @user.confirmation_sent_at
       @user.update(email_verified_at: Time.zone.now, confirmation_token: nil)
       @user.after_confirmation
       redirect_to destination_path(@user), notice: I18n.t('france_connect.particulier.flash.email_confirmed')
@@ -148,7 +116,7 @@ class FranceConnect::ParticulierController < ApplicationController
     fci = FranceConnectInformation.find_by(user: @user)
 
     if fci
-      fci.send_custom_confirmation_instructions(@user)
+      fci.send_custom_confirmation_instructions
       redirect_to root_path, notice: I18n.t('france_connect.particulier.flash.confirmation_mail_resent')
     else
       redirect_to root_path, alert: I18n.t('france_connect.particulier.flash.confirmation_mail_resent_error')
@@ -161,26 +129,19 @@ class FranceConnect::ParticulierController < ApplicationController
     @user = User.find_by(confirmation_token: params[:token])
 
     if @user.nil?
-      redirect_to root_path, alert: I18n.t('france_connect.particulier.flash.user_not_found') and return
+      return redirect_to root_path, alert: I18n.t('france_connect.particulier.flash.user_not_found')
     end
 
     if user_signed_in? && current_user != @user
-      sign_out current_user
+      sign_out :user
       redirect_to new_user_session_path, alert: I18n.t('france_connect.particulier.flash.redirect_new_user_session')
     end
   end
 
-  def use_fc_email? = cast_bool(params[:use_france_connect_email])
-
-  def sign_only(user)
-    sign_out(user) if user_signed_in?
-    sign_in(user)
-  end
-
   def destination_path(user) = stored_location_for(user) || root_path(user)
 
   def securely_retrieve_fci_from_email_merge_token
-    @fci = FranceConnectInformation.find_by(email_merge_token: email_merge_token_params)
+    @fci = FranceConnectInformation.find_by(email_merge_token: params[:email_merge_token])
 
     if @fci.nil? || !@fci.valid_for_email_merge?
       flash.alert = I18n.t('france_connect.particulier.flash.merger_token_expired', application_name: Current.application_name)
@@ -192,7 +153,7 @@ class FranceConnect::ParticulierController < ApplicationController
   end
 
   def securely_retrieve_fci
-    @fci = FranceConnectInformation.find_by(merge_token: merge_token_params)
+    @fci = FranceConnectInformation.find_by(merge_token: params[:merge_token])
 
     if @fci.nil? || !@fci.valid_for_merge?
       flash.alert = I18n.t('france_connect.particulier.flash.merger_token_expired', application_name: Current.application_name)
@@ -207,11 +168,13 @@ class FranceConnect::ParticulierController < ApplicationController
     end
   end
 
-  def connect_france_connect_particulier(user)
-    if user_signed_in?
-      sign_out :user
-    end
+  def destroy_fci_and_redirect_to_login(fci)
+    fci.destroy
+    redirect_to new_user_session_path, alert: t('errors.messages.france_connect.forbidden_html', reset_link: new_user_password_path)
+  end
 
+  def connect_france_connect_particulier(user)
+    sign_out :user if user_signed_in?
     sign_in user
 
     user.update_attribute('loged_in_with_france_connect', User.loged_in_with_france_connects.fetch(:particulier))
@@ -219,23 +182,6 @@ class FranceConnect::ParticulierController < ApplicationController
     redirect_to destination_path(current_user)
   end
 
-  def redirect_france_connect_error_connection
-    flash.alert = t('errors.messages.france_connect.connexion')
-    redirect_to(new_user_session_path)
-  end
-
-  def merge_token_params
-    params[:merge_token]
-  end
-
-  def email_merge_token_params
-    params[:email_merge_token]
-  end
-
-  def password_params
-    params[:password]
-  end
-
   def sanitized_email_params
     sanitize(params[:email])
   end
diff --git a/app/models/france_connect_information.rb b/app/models/france_connect_information.rb
index 8761dd5d1..82fad522c 100644
--- a/app/models/france_connect_information.rb
+++ b/app/models/france_connect_information.rb
@@ -8,7 +8,7 @@ class FranceConnectInformation < ApplicationRecord
 
   validates :france_connect_particulier_id, presence: true, allow_blank: false, allow_nil: false
 
-  def associate_user!(email)
+  def safely_associate_user!(email)
     begin
       user = User.create!(
         email: email.downcase,
@@ -22,11 +22,18 @@ class FranceConnectInformation < ApplicationRecord
       # because the first call has already created a user
     end
 
+    clean_tokens_and_requested_email
     update_attribute('user_id', user.id)
-    touch # needed to update updated_at column
+    save!
   end
 
-  def send_custom_confirmation_instructions(user)
+  def safely_update_user(user:)
+    self.user = user
+    clean_tokens_and_requested_email
+    save!
+  end
+
+  def send_custom_confirmation_instructions
     token = SecureRandom.hex(10)
     user.update!(confirmation_token: token, confirmation_sent_at: Time.zone.now)
     UserMailer.custom_confirmation_instructions(user, token).deliver_later
@@ -54,14 +61,18 @@ class FranceConnectInformation < ApplicationRecord
     (MERGE_VALIDITY.ago < email_merge_token_created_at) && user_id.nil?
   end
 
-  def delete_merge_token!
-    update(merge_token: nil, merge_token_created_at: nil)
-  end
-
   def delete_email_merge_token!
     update(email_merge_token: nil, email_merge_token_created_at: nil)
   end
 
+  def clean_tokens_and_requested_email
+    self.merge_token = nil
+    self.merge_token_created_at = nil
+    self.email_merge_token = nil
+    self.email_merge_token_created_at = nil
+    self.requested_email = nil
+  end
+
   def full_name
     [given_name, family_name].compact.join(" ")
   end
diff --git a/app/views/france_connect/particulier/_password_confirmation.html.haml b/app/views/france_connect/particulier/_password_confirmation.html.haml
index fd48f3619..3e23ee608 100644
--- a/app/views/france_connect/particulier/_password_confirmation.html.haml
+++ b/app/views/france_connect/particulier/_password_confirmation.html.haml
@@ -10,7 +10,7 @@
   = password_field_tag :password, nil, autocomplete: 'current-password', id: 'password-for-another-account'
   .mb-2
     = t('views.users.sessions.new.reset_password')
-    = link_to france_connect_particulier_resend_and_renew_merge_confirmation_path(merge_token: merge_token), method: :post do
+    = link_to france_connect_particulier_send_email_merge_path(merge_token: merge_token), method: :post do
       = t('france_connect.particulier.merge.link_confirm_by_email')
   = button_tag t('.back'), type: 'button', class: 'button secondary', onclick: 'DS.showNewAccount(event);'
   = submit_tag t('france_connect.particulier.merge.button_merge'), class: 'button primary'
diff --git a/app/views/france_connect/particulier/choose_email.html.haml b/app/views/france_connect/particulier/choose_email.html.haml
index b540c52cb..2ef702263 100644
--- a/app/views/france_connect/particulier/choose_email.html.haml
+++ b/app/views/france_connect/particulier/choose_email.html.haml
@@ -3,30 +3,24 @@
 
   %p= t('.greetings')
 
-  %p= t('.intro_html', email: france_connect_email)
+  %p= t('.intro_html', email: @fci.email_france_connect)
 
-  = form_with url: france_connect_particulier_associate_user_path, method: :post, data: { controller: "email-france-connect" } do |f|
-    = hidden_field_tag :france_connect_email, france_connect_email
-    = hidden_field_tag :merge_token, merge_token
+  %p= t('.use_email_for_notifications')
 
-    %fieldset.fr-fieldset{ aria: { labelledby: 'notifications-or-not-notification' } }
-      %legend.fr-fieldset__legend#notifications-or-not-notification= t('.use_email_for_notifications')
-      .fr-fieldset__element.fr-fieldset__element--inline
-        .fr-radio-group
-          = f.radio_button :use_france_connect_email, true, id: 'use_france_connect_email_yes', class: 'fr-radio', required: true, data: { action: "email-france-connect#triggerEmailField", email_france_connect_target: "useFranceConnectEmail" }
-          %label.fr-label{ for: 'use_france_connect_email_yes' }
-            = t('utils.yes')
-      .fr-fieldset__element.fr-fieldset__element--inline
-        .fr-radio-group
-          = f.radio_button :use_france_connect_email, false, id: 'use_france_connect_email_no', class: 'fr-radio', required: true, data: { action: "email-france-connect#triggerEmailField", email_france_connect_target: "useFranceConnectEmail" }
-          %label.fr-label{ for: 'use_france_connect_email_no' }
-            = t('utils.no')
+  = button_to t('utils.yes'),
+    france_connect_particulier_merge_using_fc_email_path,
+    params: { merge_token: @fci.merge_token },
+    class: 'fr-btn',
+    id: 'use_fc_email'
 
-    .fr-fieldset.fr-w-30v
-      .fr-fieldset__element.fr-fieldset__element--inline.fr-hidden{ data: { email_france_connect_target: "emailField", controller: 'email-input', email_input_url_value: show_email_suggestions_path } }
-        = f.label :alternative_email, t('.alternative_email'), class: "fr-label"
+  .fr-fieldset.fr-w-30v.fr-mt-2w
+    = form_with url: france_connect_particulier_send_email_merge_request_path do |f|
+      = hidden_field_tag :merge_token, @fci.merge_token
+
+      .fr-fieldset__element.fr-fieldset__element--inline{ data: { email_france_connect_target: "emailField", controller: 'email-input', email_input_url_value: show_email_suggestions_path } }
+        = f.label :email, t('.alternative_email'), class: "fr-label"
         %span.fr-hint-text.mb-1= t('activerecord.attributes.user.hints.email')
-        = f.email_field :alternative_email, class: "fr-input", data: { action: "blur->email-input#checkEmail", 'email-input-target': 'input' }
+        = f.email_field :email, class: "fr-input", data: { action: "blur->email-input#checkEmail", 'email-input-target': 'input' }
 
         .suspect-email.hidden{ data: { "email-input-target": 'ariaRegion'}, aria: { live: 'off' } }
           = render Dsfr::AlertComponent.new(title: t('utils.email_suggest.wanna_say'), state: :info, heading_level: :div) do |c|
@@ -37,7 +31,5 @@
                   = t('utils.yes')
                 = button_tag type: 'button', class: 'fr-btn fr-btn--sm', data: { action: 'click->email-input#discard'} do
                   = t('utils.no')
-
-
-    %div
-      = f.submit t('.confirm'), class: 'fr-btn'
+      %div
+        = f.submit t('.confirm'), class: 'fr-btn'
diff --git a/app/views/france_connect/particulier/merge.html.haml b/app/views/france_connect/particulier/merge.html.haml
index 127d3f96f..7f771043f 100644
--- a/app/views/france_connect/particulier/merge.html.haml
+++ b/app/views/france_connect/particulier/merge.html.haml
@@ -20,24 +20,25 @@
   .fusion.hidden
     %p= t('.title_fill_in_password')
 
-    = form_tag france_connect_particulier_merge_with_existing_account_path, data: { turbo: true }, class: 'mt-2 form fconnect-form' do
+    = form_tag france_connect_particulier_merge_using_password_path, data: { turbo: true }, class: 'mt-2 form fconnect-form' do
       = hidden_field_tag :merge_token, @fci.merge_token, id: dom_id(@fci, :fusion_merge_token)
-      = hidden_field_tag :email, @fci.email_france_connect, id: dom_id(@fci, :fusion_email)
       .fr-input-group
         = label_tag :password, t('views.registrations.new.password_label', min_length: 8), class: 'fr-label'
         = password_field_tag :password, nil, autocomplete: 'current-password', class: 'mb-1 fr-input'
-      .mb-2
-        = t('views.users.sessions.new.reset_password')
-        = link_to france_connect_particulier_resend_and_renew_merge_confirmation_path(merge_token: @fci.merge_token), method: :post do
-          = t('.link_confirm_by_email')
 
       = submit_tag t('.button_merge'), class: 'fr-btn'
 
+    .mt-2
+      = button_to t('.link_confirm_by_email'),
+        france_connect_particulier_send_email_merge_request_path,
+        params: { email: @fci.email_france_connect, merge_token: @fci.merge_token },
+        class: 'fr-btn fr-btn--secondary'
+
 
   .new-account.hidden
     %p= t('.title_fill_in_email', application_name: Current.application_name)
 
-    = form_tag france_connect_particulier_merge_with_new_account_path, data: { turbo: true }, class: 'mt-2 form' do
+    = form_tag france_connect_particulier_send_email_merge_request_path, class: 'mt-2 form' do
       = hidden_field_tag :merge_token, @fci.merge_token, id: dom_id(@fci, :new_account_merge_token)
       = label_tag :email, t('views.registrations.new.email_label'), for: dom_id(@fci, :new_account_email), class: 'fr-label'
       = email_field_tag :email, "", required: true, id: dom_id(@fci, :new_account_email), class: 'mb-1 fr-input'
diff --git a/app/views/user_mailer/france_connect_merge_confirmation.haml b/app/views/user_mailer/france_connect_merge_confirmation.haml
index 2f6c99a33..211703aa5 100644
--- a/app/views/user_mailer/france_connect_merge_confirmation.haml
+++ b/app/views/user_mailer/france_connect_merge_confirmation.haml
@@ -1,5 +1,5 @@
 - content_for(:title, @subject)
-- merge_link = france_connect_particulier_mail_merge_with_existing_account_url(email_merge_token: @email_merge_token)
+- merge_link = france_connect_particulier_merge_using_email_link_url(email_merge_token: @email_merge_token)
 
 %p
   Bonjour,
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 53ce483bd..9b6a17675 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -752,7 +752,6 @@ en:
       france_connect:
         connexion: "Error trying to connect to France Connect."
         forbidden_html: "Only citizen can use FranceConnect. As an instructor or administrator, you should <a href='%{reset_link}'>reset your password</a>."
-        unknown_error: "An error occured, please retry."
       evil_regexp: The regular expression you have entered is potentially dangerous and could lead to performance issues.
       mismatch_regexp: The provided example must match the regular expression
       syntax_error_regexp: The syntax of the regular expression is invalid
@@ -920,7 +919,6 @@ en:
           user_not_found: "User not found"
           invalid_password: "The password is not correct."
           connection_done: "The accounts for FranceConnect and %{application_name} are now merged."
-          connection_done_verify_email: "The FranceConnect and %{application_name} accounts are now merged. Please confirm your email by clicking on the link you received in your email."
           merger_token_expired: "Le delay to merge your FranceConnect and %{application_name} accounts is expired. Please retry."
   shared:
     procedures:
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 40ecb5527..9507716e3 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -757,7 +757,6 @@ fr:
       france_connect:
         connexion: "Erreur lors de la connexion à France Connect."
         forbidden_html: "Seul-e-s les usagers peuvent se connecter via France Connect. En tant qu’instructeur ou administrateur, nous vous invitons à <a href='%{reset_link}'>réininitialiser votre mot de passe</a>."
-        unknown_error: "Une erreure est survenue. Veuillez réessayer."
       evil_regexp: L'expression régulière que vous avez entrée est potentiellement dangereuse et pourrait entraîner des problèmes de performance
       mismatch_regexp: L'exemple doit correspondre à l'expression régulière fournie
       syntax_error_regexp: La syntaxe de l'expression régulière n'est pas valide
@@ -975,7 +974,6 @@ fr:
         user_not_found: 'Utilisateur non trouvé'
         invalid_password: "Mot de passe incorrect"
         connection_done: "Les comptes FranceConnect et %{application_name} sont à présent fusionnés"
-        connection_done_verify_email: "Les comptes FranceConnect et %{application_name} sont maintenant fusionnés. Veuillez confirmer votre e-mail en cliquant sur le lien que vous avez reçu par mail"
         merger_token_expired: "Le délai pour fusionner les comptes FranceConnect et %{application_name} est expiré. Veuillez recommencer la procédure pour vous fusionner les comptes."
   groupe_gestionnaires:
     flash:
diff --git a/config/routes.rb b/config/routes.rb
index 0a82f4c72..57031dc7c 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -188,13 +188,14 @@ Rails.application.routes.draw do
   namespace :france_connect do
     get 'particulier' => 'particulier#login'
     get 'particulier/callback' => 'particulier#callback'
-    get 'particulier/merge/:merge_token' => 'particulier#merge', as: :particulier_merge
-    get 'particulier/mail_merge_with_existing_account/:email_merge_token' => 'particulier#mail_merge_with_existing_account', as: :particulier_mail_merge_with_existing_account
+
+    post 'particulier/send_email_merge_request'
+
+    post 'particulier/merge_using_fc_email'
+    post 'particulier/merge_using_password'
+    get 'particulier/merge_using_email_link/:email_merge_token' => 'particulier#merge_using_email_link', as: :particulier_merge_using_email_link
+
     get 'confirm_email/:token', to: 'particulier#confirm_email', as: :confirm_email
-    post 'particulier/resend_and_renew_merge_confirmation' => 'particulier#resend_and_renew_merge_confirmation', as: :particulier_resend_and_renew_merge_confirmation
-    post 'particulier/merge_with_existing_account' => 'particulier#merge_with_existing_account'
-    post 'particulier/merge_with_new_account' => 'particulier#merge_with_new_account'
-    post 'particulier/associate_user'
   end
 
   namespace :agent_connect do
diff --git a/spec/controllers/france_connect/particulier_controller_spec.rb b/spec/controllers/france_connect/particulier_controller_spec.rb
index 099d2d01f..add906511 100644
--- a/spec/controllers/france_connect/particulier_controller_spec.rb
+++ b/spec/controllers/france_connect/particulier_controller_spec.rb
@@ -98,16 +98,16 @@ describe FranceConnect::ParticulierController, type: :controller do
           context 'and an user with the same email exists' do
             let!(:preexisting_user) { create(:user, email: email) }
 
-            it 'redirects to the merge process' do
+            it 'renders the merge page' do
               expect { subject }.not_to change { User.count }
 
-              expect(response).to redirect_to(france_connect_particulier_merge_path(fci.reload.merge_token))
+              expect(response).to render_template(:merge)
             end
           end
           context 'and an instructeur with the same email exists' do
             let!(:preexisting_user) { create(:instructeur, email: email) }
 
-            it 'redirects to the merge process' do
+            it 'redirects to the login path' do
               expect { subject }.not_to change { User.count }
 
               expect(response).to redirect_to(new_user_session_path)
@@ -136,82 +136,35 @@ describe FranceConnect::ParticulierController, type: :controller do
     end
   end
 
-  describe '#associate_user' do
-    subject { post :associate_user, params: { use_france_connect_email: use_france_connect_email, alternative_email: alternative_email, merge_token: merge_token } }
+  describe '#merge_using_fc_email' do
+    subject { post :merge_using_fc_email, params: { merge_token: merge_token } }
 
-    let(:fci) { FranceConnectInformation.new(user_info) }
-    let(:use_france_connect_email) { true }
-    let(:alternative_email) { 'alt@example.com' }
-    let(:merge_token) { 'valid_merge_token' }
+    let!(:fci) { FranceConnectInformation.create!(user_info) }
+    let(:merge_token) { fci.create_merge_token! }
 
     before do
-      allow_any_instance_of(ApplicationController).to receive(:session).and_return({ merge_token: merge_token })
+      allow(UserMailer).to receive_message_chain(:custom_confirmation_instructions, :deliver_later)
     end
 
-    context 'when we are using france connect email' do
-      let(:fci) { instance_double('FranceConnectInformation') }
-      let(:email) { 'fc_email@example.com' }
-      let(:user) { instance_double('User') }
-      let(:destination_path) { '/some_path' }
-      let(:merge_token) { 'some_token' }
+    context 'when the merge token is valid' do
+      it do
+        expect(User.last.email).not_to eq(email.downcase)
 
-      before do
-        allow(controller).to receive(:securely_retrieve_fci).and_return(fci)
-        controller.instance_variable_set(:@fci, fci)
-        allow(fci).to receive(:email_france_connect).and_return(email)
-        allow(fci).to receive(:associate_user!)
-        allow(fci).to receive(:user).and_return(user)
-        allow(fci).to receive(:delete_merge_token!)
-        allow(fci).to receive(:send_custom_confirmation_instructions)
-        allow(controller).to receive(:use_fc_email?).and_return(true)
-        allow(controller).to receive(:sign_only)
-        allow(controller).to receive(:destination_path).and_return(destination_path)
-      end
+        subject
 
-      subject { post :associate_user, params: { merge_token: merge_token, use_france_connect_email: true } }
+        user = User.last
 
-      context 'when association is successful' do
-        it 'renders the confirmation_sent template' do
-          subject
-          expect(response).to render_template(:confirmation_sent)
-        end
-
-        it 'performs all expected steps' do
-          expect(fci).to receive(:associate_user!).with(email)
-          expect(fci).to receive(:send_custom_confirmation_instructions).with(user)
-          expect(fci).to receive(:delete_merge_token!)
-          expect(controller).to receive(:sign_only).with(user)
-          expect(controller).to receive(:render).with(:confirmation_sent, locals: { email: email, destination_path: destination_path })
-
-          subject
-        end
-      end
-
-      context 'when association fails due to unknown error' do
-        let(:user) { User.new }
-        let(:error) { ActiveRecord::RecordInvalid.new(user) }
-
-        before do
-          allow(fci).to receive(:associate_user!).and_raise(error)
-          allow(user.errors).to receive(:where).with(:email, :taken).and_return(nil)
-        end
-
-        it 'redirects to new user session path with unknown error alert' do
-          subject
-          expect(response).to redirect_to(new_user_session_path)
-          expect(flash[:alert]).to eq(I18n.t('errors.messages.france_connect.unknown_error'))
-        end
+        expect(user.email).to eq(email.downcase)
+        expect(UserMailer).to have_received(:custom_confirmation_instructions).with(user, user.confirmation_token)
+        expect(user.email_verified_at).to be_nil
+        expect(fci.reload.merge_token).to be_nil
+        expect(response).to render_template(:confirmation_sent)
       end
     end
 
-    context 'when france connect information is missing or invalid' do
+    context 'when the merge token is invalid' do
       let(:merge_token) { 'invalid_token' }
 
-      before do
-        allow(FranceConnectInformation).to receive(:find_by).with(merge_token: merge_token).and_return(nil)
-        allow(controller).to receive(:merge_token_params).and_return(merge_token)
-      end
-
       it 'redirects to root_path with an alert' do
         subject
         expect(response).to redirect_to(root_path)
@@ -221,113 +174,24 @@ describe FranceConnect::ParticulierController, type: :controller do
 
     context 'when @fci is not valid for merge' do
       before do
-        allow(FranceConnectInformation).to receive(:find_by).with(merge_token: merge_token).and_return(fci)
-        allow(fci).to receive(:valid_for_merge?).and_return(false)
+        merge_token
+        fci.update!(merge_token_created_at: 2.years.ago)
       end
 
       it 'redirects to root_path with an alert' do
         subject
+
         expect(response).to redirect_to(root_path)
         expect(flash[:alert]).to eq('Le délai pour fusionner les comptes FranceConnect et demarches-simplifiees.fr est expiré. Veuillez recommencer la procédure pour vous fusionner les comptes.')
       end
     end
-
-    context 'when associating the user succeeds' do
-      let(:fci) { instance_double('FranceConnectInformation') }
-      let(:email) { 'user@example.com' }
-      let(:user) { instance_double('User', id: 1) }
-      let(:destination_path) { '/' }
-      let(:merge_token) { 'sample_merge_token' }
-
-      before do
-        allow(controller).to receive(:securely_retrieve_fci) do
-          controller.instance_variable_set(:@fci, fci)
-        end
-        allow(fci).to receive(:email_france_connect).and_return(email)
-        allow(fci).to receive(:associate_user!)
-        allow(fci).to receive(:user).and_return(user)
-        allow(fci).to receive(:delete_merge_token!)
-        allow(fci).to receive(:send_custom_confirmation_instructions)
-        allow(controller).to receive(:use_fc_email?).and_return(true)
-        allow(controller).to receive(:sign_only)
-        allow(controller).to receive(:destination_path).and_return(destination_path)
-      end
-
-      subject { post :associate_user, params: { merge_token: merge_token, use_france_connect_email: true } }
-
-      it 'calls associate_user! with the correct email' do
-        expect(fci).to receive(:associate_user!).with(email)
-        subject
-      end
-
-      it 'sends custom confirmation instructions' do
-        expect(fci).to receive(:send_custom_confirmation_instructions).with(user)
-        subject
-      end
-
-      it 'deletes the merge token' do
-        expect(fci).to receive(:delete_merge_token!)
-        subject
-      end
-
-      it 'signs in the user' do
-        expect(controller).to receive(:sign_only).with(user)
-        subject
-      end
-
-      it 'renders the confirmation sent template with correct locals' do
-        expect(controller).to receive(:render).with(
-          :confirmation_sent,
-          locals: { email: email, destination_path: destination_path }
-        )
-        subject
-      end
-    end
-
-    context 'when associate_user uses an email of an existing user' do
-      let(:fci) { instance_double('FranceConnectInformation') }
-      let(:email) { 'user@example.com' }
-      let(:user) { instance_double('User', id: 1) }
-      let(:destination_path) { '/' }
-      let(:existing_user) { create(:user, email:) }
-      before do
-        invalid_user = build(:user, email:)
-        allow(FranceConnectInformation).to receive(:find_by).with(merge_token: merge_token).and_return(fci)
-        allow(fci).to receive(:valid_for_merge?).and_return(true)
-        allow(fci).to receive(:email_france_connect).and_return(email)
-        invalid_user.valid?
-        allow(fci).to receive(:associate_user!).and_raise(ActiveRecord::RecordInvalid.new(invalid_user))
-      end
-
-      it 'sends confirmation to existing user' do
-        expect(controller).to receive(:render).with(
-          :confirmation_sent,
-          locals: { email: email, destination_path: destination_path }
-        )
-        expect(fci).to receive(:send_custom_confirmation_instructions).with(existing_user)
-        expect(fci).to receive(:delete_merge_token!)
-        subject
-      end
-    end
   end
 
   describe '#confirm_email' do
     let!(:user) { create(:user) }
     let!(:fci) { create(:france_connect_information, user: user) }
 
-    before do
-      sign_in(user)
-      fci.send_custom_confirmation_instructions(user)
-      user.reload
-    end
-
-    let!(:expired_user_confirmation) do
-      user = create(:user)
-      fci = create(:france_connect_information, user: user)
-      token = SecureRandom.hex(10)
-      user.update!(confirmation_token: token, confirmation_sent_at: 3.days.ago)
-      user
-    end
+    before { fci.send_custom_confirmation_instructions }
 
     context 'when the confirmation token is valid' do
       before do
@@ -335,20 +199,13 @@ describe FranceConnect::ParticulierController, type: :controller do
         user.reload
       end
 
-      it 'updates the email_verified_at and confirmation_token of the user' do
+      it do
         expect(user.email_verified_at).to be_present
         expect(user.confirmation_token).to be_nil
-      end
 
-      it 'redirects to the stored location or root path with a success notice' do
         expect(response).to redirect_to(root_path(user))
         expect(flash[:notice]).to eq('Votre email est bien vérifié')
       end
-
-      it 'calls after_confirmation on the user' do
-        expect(user).to receive(:after_confirmation).and_call_original
-        user.after_confirmation
-      end
     end
 
     context 'when invites are pending' do
@@ -362,16 +219,10 @@ describe FranceConnect::ParticulierController, type: :controller do
     end
 
     context 'when the confirmation token is expired' do
-      let(:expired_user_confirmation) do
+      let!(:expired_user_confirmation) do
         create(:user, confirmation_token: 'expired_token', confirmation_sent_at: 3.days.ago)
       end
 
-      before do
-        allow(User).to receive(:find_by).with(confirmation_token: 'expired_token').and_return(expired_user_confirmation)
-        allow(controller).to receive(:user_signed_in?).and_return(false)
-        allow(FranceConnectInformation).to receive(:find_by).with(user: expired_user_confirmation).and_return(nil)
-      end
-
       it 'redirects to root path with an alert when FranceConnectInformation is not found' do
         get :confirm_email, params: { token: 'expired_token' }
 
@@ -380,18 +231,20 @@ describe FranceConnect::ParticulierController, type: :controller do
       end
 
       context 'when FranceConnectInformation exists' do
-        let(:france_connect_information) { instance_double(FranceConnectInformation) }
+        let!(:france_connect_information) do
+          create(:france_connect_information, user: expired_user_confirmation)
+        end
 
         before do
-          allow(FranceConnectInformation).to receive(:find_by).with(user: expired_user_confirmation).and_return(france_connect_information)
-          allow(france_connect_information).to receive(:send_custom_confirmation_instructions)
+          allow(UserMailer).to receive_message_chain(:custom_confirmation_instructions, :deliver_later)
         end
 
         it 'resends the confirmation email and redirects to root path with a notice' do
-          expect(france_connect_information).to receive(:send_custom_confirmation_instructions).with(expired_user_confirmation)
-
           get :confirm_email, params: { token: 'expired_token' }
 
+          expect(UserMailer).to have_received(:custom_confirmation_instructions)
+            .with(expired_user_confirmation, expired_user_confirmation.reload.confirmation_token)
+
           expect(response).to redirect_to(root_path)
           expect(flash[:notice]).to eq(I18n.t('france_connect.particulier.flash.confirmation_mail_resent'))
         end
@@ -399,46 +252,34 @@ describe FranceConnect::ParticulierController, type: :controller do
     end
 
     context 'when a different user is signed in' do
-      let(:expired_user_confirmation) do
+      let!(:expired_user_confirmation) do
         create(:user, confirmation_token: 'expired_token', confirmation_sent_at: 3.days.ago)
       end
-      let(:current_user) { create(:user) }
 
-      before do
-        allow(User).to receive(:find_by).with(confirmation_token: 'expired_token').and_return(expired_user_confirmation)
-        allow(controller).to receive(:user_signed_in?).and_return(true)
-        allow(controller).to receive(:current_user).and_return(current_user)
-      end
+      let(:another_user) { create(:user) }
+
+      before { sign_in(another_user) }
 
       it 'signs out the current user and redirects to sign in path' do
-        expect(controller).to receive(:sign_out).with(current_user)
+        expect_any_instance_of(FranceConnectInformation).not_to receive(:send_custom_confirmation_instructions)
+        expect(controller).to receive(:sign_out).with(:user)
 
         get :confirm_email, params: { token: 'expired_token' }
 
         expect(response).to redirect_to(new_user_session_path)
         expect(flash[:alert]).to eq(I18n.t('france_connect.particulier.flash.redirect_new_user_session'))
       end
-
-      it 'does not process the confirmation' do
-        expect(FranceConnectInformation).not_to receive(:find_by)
-        expect_any_instance_of(FranceConnectInformation).not_to receive(:send_custom_confirmation_instructions)
-
-        get :confirm_email, params: { token: 'expired_token' }
-      end
     end
   end
 
   describe '#set_user_by_confirmation_token' do
     let(:current_user) { create(:user) }
-    let(:confirmation_user) { create(:user, confirmation_token: 'valid_token') }
+    let!(:confirmation_user) { create(:user, confirmation_token: 'valid_token') }
 
-    before do
-      sign_in current_user
-      allow(User).to receive(:find_by).with(confirmation_token: 'valid_token').and_return(confirmation_user)
-    end
+    before { sign_in current_user }
 
     it 'signs out current user and redirects to new session path when users do not match' do
-      expect(controller).to receive(:sign_out).with(current_user)
+      expect(controller).to receive(:sign_out).with(:user)
 
       get :confirm_email, params: { token: 'valid_token' }
 
@@ -448,8 +289,6 @@ describe FranceConnect::ParticulierController, type: :controller do
 
     context 'when user is not found' do
       it 'redirects to root path with user not found alert' do
-        allow(User).to receive(:find_by).with(confirmation_token: 'invalid_token').and_return(nil)
-
         get :confirm_email, params: { token: 'invalid_token' }
 
         expect(response).to redirect_to(root_path)
@@ -478,41 +317,14 @@ describe FranceConnect::ParticulierController, type: :controller do
     end
   end
 
-  describe '#merge' do
-    let(:fci) { FranceConnectInformation.create!(user_info) }
-    let(:merge_token) { fci.create_merge_token! }
-    let(:format) { :html }
-
-    subject { get :merge, params: { merge_token: merge_token } }
-
-    context 'when the merge token is valid' do
-      it { expect(subject).to have_http_status(:ok) }
-    end
-
-    it_behaves_like "a method that needs a valid merge token"
-
-    context 'when the merge token does not exist' do
-      let(:merge_token) { 'i do not exist' }
-
-      before do
-        allow(Current).to receive(:application_name).and_return('demarches-simplifiees.fr')
-      end
-
-      it do
-        expect(subject).to redirect_to root_path
-        expect(flash.alert).to eq("Le délai pour fusionner les comptes FranceConnect et demarches-simplifiees.fr est expiré. Veuillez recommencer la procédure pour vous fusionner les comptes.")
-      end
-    end
-  end
-
-  describe '#merge_with_existing_account' do
+  describe '#merge_using_password' do
     let(:fci) { FranceConnectInformation.create!(user_info) }
     let(:merge_token) { fci.create_merge_token! }
     let(:email) { 'EXISTING_account@a.com ' }
     let(:password) { SECURE_PASSWORD }
     let(:format) { :turbo_stream }
 
-    subject { post :merge_with_existing_account, params: { merge_token: merge_token, email: email, password: password }, format: format }
+    subject { post :merge_using_password, params: { merge_token: merge_token, password: password }, format: format }
 
     it_behaves_like "a method that needs a valid merge token"
 
@@ -544,9 +356,9 @@ describe FranceConnect::ParticulierController, type: :controller do
 
         it 'redirects to the root page' do
           subject
-          fci.reload
 
-          expect(fci.user).to be_nil
+          expect { fci.reload }.to raise_error(ActiveRecord::RecordNotFound)
+
           expect(fci.merge_token).not_to be_nil
           expect(controller.current_user).to be_nil
         end
@@ -568,18 +380,21 @@ describe FranceConnect::ParticulierController, type: :controller do
     end
   end
 
-  describe '#mail_merge_with_existing_account' do
+  describe '#merge_using_email_link' do
     let(:fci) { FranceConnectInformation.create!(user_info) }
     let!(:email_merge_token) { fci.create_email_merge_token! }
 
     context 'when the merge_token is ok and the user is found' do
-      subject { post :mail_merge_with_existing_account, params: { email_merge_token: } }
+      subject do
+        post :merge_using_email_link, params: { email_merge_token: }
+      end
 
       before do
         allow(Current).to receive(:application_name).and_return('demarches-simplifiees.fr')
+        fci.update!(requested_email: email.downcase)
       end
 
-      let!(:user) { create(:user, email: email, password: 'abcdefgh') }
+      let!(:user) { create(:user, email:, password: 'abcdefgh') }
 
       it 'merges the account, signs in, and delete the merge token' do
         subject
@@ -604,82 +419,26 @@ describe FranceConnect::ParticulierController, type: :controller do
         end
       end
     end
-
-    context 'when the email_merge_token is not ok' do
-      subject { post :mail_merge_with_existing_account, params: { email_merge_token: 'ko' } }
-
-      let!(:user) { create(:user, email: email) }
-
-      it 'increases the failed attempts counter' do
-        subject
-        fci.reload
-
-        expect(fci.user).to be_nil
-        expect(fci.email_merge_token).not_to be_nil
-        expect(controller.current_user).to be_nil
-        expect(response).to redirect_to(root_path)
-      end
-    end
   end
 
-  describe '#merge_with_new_account' do
+  describe '#send_email_merge_request' do
     let(:fci) { FranceConnectInformation.create!(user_info) }
     let(:merge_token) { fci.create_merge_token! }
-    let(:email) { ' Account@a.com ' }
-    let(:format) { :turbo_stream }
+    let(:email) { 'requested_email@.a.com' }
 
-    subject { post :merge_with_new_account, params: { merge_token: merge_token, email: email }, format: format }
+    subject { post :send_email_merge_request, params: { merge_token: merge_token, email: } }
 
-    it_behaves_like "a method that needs a valid merge token"
-
-    context 'when the email does not belong to any user' do
-      it 'creates the account, signs in, and delete the merge token' do
-        subject
-        fci.reload
-
-        expect(fci.user.email).to eq(email.downcase.strip)
-        expect(fci.merge_token).to be_nil
-        expect(controller.current_user).to eq(fci.user)
-        expect(response).to redirect_to(root_path)
-      end
-    end
-
-    context 'when an account with the same email exists' do
-      let!(:user) { create(:user, email: email) }
-
-      before { allow(controller).to receive(:sign_in).and_call_original }
-
-      render_views
-
-      it 'asks for the corresponding password' do
-        subject
-        fci.reload
-
-        expect(fci.user).to be_nil
-        expect(fci.merge_token).not_to be_nil
-        expect(controller.current_user).to be_nil
-
-        expect(response.body).to include('entrez votre mot de passe')
-      end
-
-      it 'cannot use the merge token in the email confirmation route' do
-        subject
-        fci.reload
-
-        get :mail_merge_with_existing_account, params: { email_merge_token: fci.merge_token }
-        expect(controller).not_to have_received(:sign_in)
-        expect(flash[:alert]).to be_present
-      end
-    end
-  end
-
-  describe '#resend_and_renew_merge_confirmation' do
-    let(:fci) { FranceConnectInformation.create!(user_info) }
-    let(:merge_token) { fci.create_merge_token! }
     it 'renew token' do
-      expect { post :resend_and_renew_merge_confirmation, params: { merge_token: merge_token } }.to change { fci.reload.merge_token }
+      allow(UserMailer).to receive_message_chain(:france_connect_merge_confirmation, :deliver_later)
+      subject
+
+      fci.reload
+      expect(fci.requested_email).to eq(email)
       expect(fci.email_merge_token).to be_present
-      expect(response).to redirect_to(france_connect_particulier_merge_path(fci.reload.merge_token))
+
+      expect(UserMailer).to have_received(:france_connect_merge_confirmation).with(email, fci.email_merge_token, fci.email_merge_token_created_at)
+
+      expect(response).to redirect_to(root_path)
     end
   end
 end
diff --git a/spec/mailers/user_mailer_spec.rb b/spec/mailers/user_mailer_spec.rb
index 151907c72..c187c27d7 100644
--- a/spec/mailers/user_mailer_spec.rb
+++ b/spec/mailers/user_mailer_spec.rb
@@ -81,7 +81,7 @@ RSpec.describe UserMailer, type: :mailer do
 
     it 'sends to correct email with merge link' do
       expect(subject.to).to eq([email])
-      expect(subject.body).to include(france_connect_particulier_mail_merge_with_existing_account_url(email_merge_token: code))
+      expect(subject.body).to include(france_connect_particulier_merge_using_email_link_url(email_merge_token: code))
     end
 
     context 'without SafeMailer configured' do
diff --git a/spec/models/france_connect_information_spec.rb b/spec/models/france_connect_information_spec.rb
index aaefe9da5..0afe00f8c 100644
--- a/spec/models/france_connect_information_spec.rb
+++ b/spec/models/france_connect_information_spec.rb
@@ -9,11 +9,11 @@ describe FranceConnectInformation, type: :model do
     end
   end
 
-  describe 'associate_user!' do
+  describe 'safely_associate_user!' do
     let(:email) { 'A@email.com' }
     let(:fci) { build(:france_connect_information) }
 
-    subject { fci.associate_user!(email) }
+    subject { fci.safely_associate_user!(email) }
 
     context 'when there is no user with the same email' do
       it 'creates a new user' do
@@ -51,13 +51,13 @@ describe FranceConnectInformation, type: :model do
       end
 
       it 'raises an error' do
-        expect { fci.associate_user!(email) }.to raise_error(NoMethodError)
+        expect { fci.safely_associate_user!(email) }.to raise_error(NoMethodError)
       end
 
       it 'does not create a new user' do
         expect {
           begin
-            fci.associate_user!(email)
+            fci.safely_associate_user!(email)
           rescue NoMethodError
           end
         }.to_not change(User, :count)
@@ -66,7 +66,7 @@ describe FranceConnectInformation, type: :model do
       it 'does not associate with any user' do
         expect(fci.user).to be_nil
         begin
-          fci.associate_user!(email)
+          fci.safely_associate_user!(email)
         rescue NoMethodError
         end
         expect(fci.reload.user).to be_nil
diff --git a/spec/system/france_connect/france_connect_particulier_spec.rb b/spec/system/france_connect/france_connect_particulier_spec.rb
index 60f1c2c91..cfea467cf 100644
--- a/spec/system/france_connect/france_connect_particulier_spec.rb
+++ b/spec/system/france_connect/france_connect_particulier_spec.rb
@@ -44,9 +44,7 @@ describe 'France Connect Particulier Connexion' do
 
             scenario 'he is redirected to user dossiers page' do
               expect(page).to have_content("Choisissez votre e-mail de contact")
-              expect(page).to have_selector("#use_france_connect_email_yes", visible: false, wait: 10)
-              find('#use_france_connect_email_yes').click
-              click_on 'Confirmer'
+              find('#use_fc_email').click
               expect(page).to have_content("Confirmation envoyée")
               click_on 'Continuer'
               expect(User.find_by(email: email)).not_to be nil
@@ -54,16 +52,13 @@ describe 'France Connect Particulier Connexion' do
 
             scenario 'he can choose not to use FranceConnect email and input an alternative email' do
               expect(page).to have_content("Choisissez votre e-mail de contact")
-              expect(page).to have_selector("#use_france_connect_email_no", visible: false, wait: 10)
 
-              find('#use_france_connect_email_no').click
-              expect(page).to have_selector("input[name='alternative_email']", visible: true, wait: 10)
+              expect(page).to have_selector("input[name='email']", visible: true, wait: 10)
 
-              fill_in 'alternative_email', with: 'alternative@example.com'
+              fill_in 'email', with: 'alternative@example.com'
               click_on 'Confirmer'
-              expect(page).to have_content("Confirmation envoyée")
-              click_on 'Continuer'
-              expect(User.find_by(email: 'alternative@example.com')).not_to be nil
+
+              expect(page).to have_content("Nous venons de vous envoyer le mail de confirmation")
             end
           end
 
@@ -91,7 +86,7 @@ describe 'France Connect Particulier Connexion' do
               fill_in 'email', with: 'new_email@a.com'
               click_on 'Utiliser ce mail'
 
-              expect(page).to have_content('Dossiers')
+              expect(page).to have_content('Nous venons de vous envoyer le mail de confirmation')
             end
 
             context 'and the user wants an email that belongs to another account', js: true do
@@ -107,10 +102,7 @@ describe 'France Connect Particulier Connexion' do
                   click_on 'Utiliser ce mail'
                 end
 
-                fill_in 'password-for-another-account', with: SECURE_PASSWORD
-                last_button = all('input[type="submit"][value="Fusionner les comptes"]').last.click
-                puts last_button.click
-                expect(page).to have_content('Dossiers')
+                expect(page).to have_content('Nous venons de vous envoyer le mail de confirmation')
               end
             end
           end
diff --git a/spec/system/users/dossier_prefill_get_spec.rb b/spec/system/users/dossier_prefill_get_spec.rb
index f00ffae34..6333f617e 100644
--- a/spec/system/users/dossier_prefill_get_spec.rb
+++ b/spec/system/users/dossier_prefill_get_spec.rb
@@ -192,11 +192,11 @@ describe 'Prefilling a dossier (with a GET request):', js: true do
           page.find('.fr-connect').click
 
           expect(page).to have_content("Choisissez votre e-mail de contact")
-          expect(page).to have_selector("#use_france_connect_email_yes", visible: false, wait: 10)
-          page.execute_script('document.getElementById("use_france_connect_email_yes").click()')
+          expect(page).to have_selector("#use_fc_email", visible: false, wait: 10)
+          page.execute_script('document.getElementById("use_fc_email").click()')
 
-          click_on 'Confirmer'
           expect(page).to have_content("Confirmation envoyée")
+
           click_on 'Continuer'
           expect(page).to have_content('Vous avez un dossier prérempli')
           find('.fr-btn.fr-mb-2w', text: 'Poursuivre mon dossier prérempli', wait: 10).click