diff --git a/apps/participation/templates/participation/chat.html b/apps/participation/templates/participation/chat.html
new file mode 100644
index 0000000..bbdd0f4
--- /dev/null
+++ b/apps/participation/templates/participation/chat.html
@@ -0,0 +1,16 @@
+{% extends "base.html" %}
+
+{% block extracss %}
+    <style>
+    iframe {
+        width: 100%;
+        height: 100vh;
+        margin: 0;
+        padding: 0;
+    }
+    </style>
+{% endblock %}
+
+{% block fullcontent %}
+    <iframe frameborder="0" src="https://element.correspondances-maths.fr/#/room/#faq:correspondances-maths.fr"></iframe>
+{% endblock %}
diff --git a/apps/participation/urls.py b/apps/participation/urls.py
index 10b7676..6005fd1 100644
--- a/apps/participation/urls.py
+++ b/apps/participation/urls.py
@@ -1,4 +1,5 @@
 from django.urls import path
+from django.views.generic import TemplateView
 
 from .views import CalendarView, CreateTeamView, JoinTeamView, MyParticipationDetailView, MyTeamDetailView, \
     ParticipationDetailView, PhaseUpdateView, TeamAuthorizationsView, TeamDetailView, TeamLeaveView, TeamUpdateView, \
@@ -20,4 +21,5 @@ urlpatterns = [
     path("detail/upload-video/<int:pk>/", UploadVideoView.as_view(), name="upload_video"),
     path("calendar/", CalendarView.as_view(), name="calendar"),
     path("calendar/<int:pk>/", PhaseUpdateView.as_view(), name="update_phase"),
+    path("chat/", TemplateView.as_view(template_name="participation/chat.html"), name="chat")
 ]
diff --git a/locale/fr/LC_MESSAGES/django.po b/locale/fr/LC_MESSAGES/django.po
index 76a01c1..95b7020 100644
--- a/locale/fr/LC_MESSAGES/django.po
+++ b/locale/fr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Corres2math\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-10-20 15:53+0200\n"
+"POT-Creation-Date: 2020-10-29 16:06+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Yohann D'ANELLO <yohann.danello@animath.fr>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -99,7 +99,7 @@ msgstr "changelogs"
 msgid "Changelog of type \"{action}\" for model {model} at {timestamp}"
 msgstr "Changelog de type \"{action}\" pour le modèle {model} le {timestamp}"
 
-#: apps/participation/forms.py:15 apps/participation/models.py:28
+#: apps/participation/forms.py:15 apps/participation/models.py:29
 msgid "The trigram must be composed of three uppercase letters."
 msgstr "Le trigramme doit être composé de trois lettres majuscules."
 
@@ -131,28 +131,28 @@ msgstr "Cette phase doit commencer après les phases précédentes."
 msgid "This phase must end after the next phases."
 msgstr "Cette phase doit finir avant les phases suivantes."
 
-#: apps/participation/models.py:21 apps/participation/tables.py:30
+#: apps/participation/models.py:22 apps/participation/tables.py:30
 #: apps/participation/tables.py:52 apps/participation/tables.py:78
 msgid "name"
 msgstr "nom"
 
-#: apps/participation/models.py:27 apps/participation/tables.py:57
+#: apps/participation/models.py:28 apps/participation/tables.py:57
 msgid "trigram"
 msgstr "trigramme"
 
-#: apps/participation/models.py:35
+#: apps/participation/models.py:36
 msgid "access code"
 msgstr "code d'accès"
 
-#: apps/participation/models.py:36
+#: apps/participation/models.py:37
 msgid "The access code let other people to join the team."
 msgstr "Le code d'accès permet aux autres participants de rejoindre l'équipe."
 
-#: apps/participation/models.py:40
+#: apps/participation/models.py:41
 msgid "Grant Animath to publish my video"
 msgstr "Autoriser Animath à publier ma vidéo"
 
-#: apps/participation/models.py:41
+#: apps/participation/models.py:42
 msgid ""
 "Give the authorisation to publish the video on the main website to promote "
 "the action."
@@ -160,101 +160,101 @@ msgstr ""
 "Donner l'autorisation de publier la vidéo sur le site principal pour "
 "promouvoir les Correspondances."
 
-#: apps/participation/models.py:72
+#: apps/participation/models.py:82
 #, python-brace-format
 msgid "Team {name} ({trigram})"
 msgstr "Équipe {name} ({trigram})"
 
-#: apps/participation/models.py:75 apps/participation/models.py:86
-#: apps/registration/models.py:89 apps/registration/models.py:134
+#: apps/participation/models.py:85 apps/participation/models.py:96
+#: apps/registration/models.py:93 apps/registration/models.py:138
 msgid "team"
 msgstr "équipe"
 
-#: apps/participation/models.py:76
+#: apps/participation/models.py:86
 msgid "teams"
 msgstr "équipes"
 
-#: apps/participation/models.py:90
+#: apps/participation/models.py:100
 #, python-brace-format
 msgid "Problem #{problem:d}"
 msgstr "Problème n°{problem:d}"
 
-#: apps/participation/models.py:93 apps/participation/tables.py:35
+#: apps/participation/models.py:103 apps/participation/tables.py:35
 #: apps/participation/tables.py:62
 msgid "problem number"
 msgstr "numéro de problème"
 
-#: apps/participation/models.py:99 apps/participation/models.py:150
+#: apps/participation/models.py:109 apps/participation/models.py:160
 msgid "valid"
 msgstr "valide"
 
-#: apps/participation/models.py:100 apps/participation/models.py:151
+#: apps/participation/models.py:110 apps/participation/models.py:161
 msgid "The video got the validation of the administrators."
 msgstr "La vidéo a été validée par les administrateurs."
 
-#: apps/participation/models.py:109
+#: apps/participation/models.py:119
 msgid "solution video"
 msgstr "vidéo de solution"
 
-#: apps/participation/models.py:118
+#: apps/participation/models.py:128
 msgid "received participation"
 msgstr "participation reçue"
 
-#: apps/participation/models.py:127
+#: apps/participation/models.py:137
 msgid "synthesis video"
 msgstr "vidéo de synthèse"
 
-#: apps/participation/models.py:134
+#: apps/participation/models.py:144
 #, python-brace-format
 msgid "Participation of the team {name} ({trigram})"
 msgstr "Participation de l'équipe {name} ({trigram})"
 
-#: apps/participation/models.py:137
+#: apps/participation/models.py:147
 msgid "participation"
 msgstr "participation"
 
-#: apps/participation/models.py:138
+#: apps/participation/models.py:148
 msgid "participations"
 msgstr "participations"
 
-#: apps/participation/models.py:143
+#: apps/participation/models.py:153
 msgid "link"
 msgstr "lien"
 
-#: apps/participation/models.py:144
+#: apps/participation/models.py:154
 msgid "The full video link."
 msgstr "Le lien complet de la vidéo."
 
-#: apps/participation/models.py:178
+#: apps/participation/models.py:188
 #, python-brace-format
 msgid "Video of team {name} ({trigram})"
 msgstr "Vidéo de l'équipe {name} ({trigram})"
 
-#: apps/participation/models.py:182
+#: apps/participation/models.py:192
 msgid "video"
 msgstr "vidéo"
 
-#: apps/participation/models.py:183
+#: apps/participation/models.py:193
 msgid "videos"
 msgstr "vidéos"
 
-#: apps/participation/models.py:190
+#: apps/participation/models.py:200
 msgid "phase number"
 msgstr "phase"
 
-#: apps/participation/models.py:195
+#: apps/participation/models.py:205
 msgid "phase description"
 msgstr "description"
 
-#: apps/participation/models.py:199
+#: apps/participation/models.py:209
 msgid "start date of the given phase"
 msgstr "début de la phase"
 
-#: apps/participation/models.py:204
+#: apps/participation/models.py:214
 msgid "end date of the given phase"
 msgstr "fin de la phase"
 
-#: apps/participation/models.py:219
+#: apps/participation/models.py:229
 msgid ""
 "Phase {phase_number:d} starts on {start:%Y-%m-%d %H:%M} and ends on {end:%Y-"
 "%m-%d %H:%M}"
@@ -262,21 +262,21 @@ msgstr ""
 "Phase {phase_number:d} démarrant le {start:%d/%m/%Y %H:%M} et finissant le "
 "{end:%d/%m/%Y %H:%M}"
 
-#: apps/participation/models.py:223
+#: apps/participation/models.py:233
 msgid "phase"
 msgstr "phase"
 
-#: apps/participation/models.py:224
+#: apps/participation/models.py:234
 msgid "phases"
 msgstr "phases"
 
 #: apps/participation/templates/participation/create_team.html:11
-#: templates/base.html:229
+#: templates/base.html:231
 msgid "Create"
 msgstr "Créer"
 
 #: apps/participation/templates/participation/join_team.html:11
-#: templates/base.html:225
+#: templates/base.html:227
 msgid "Join"
 msgstr "Rejoindre"
 
@@ -347,7 +347,7 @@ msgid "Update"
 msgstr "Modifier"
 
 #: apps/participation/templates/participation/phase_list.html:10
-#: templates/base.html:68 templates/base.html:70 templates/base.html:215
+#: templates/base.html:68 templates/base.html:70 templates/base.html:217
 msgid "Calendar"
 msgstr "Calendrier"
 
@@ -394,7 +394,7 @@ msgstr "Pas encore envoyée"
 
 #: apps/participation/templates/participation/team_detail.html:66
 #: apps/participation/templates/participation/team_detail.html:128
-#: apps/participation/templates/participation/team_leave.html:9
+#: apps/participation/templates/participation/team_leave.html:11
 msgid "Leave"
 msgstr "Quitter"
 
@@ -454,74 +454,81 @@ msgstr "Modifier l'équipe"
 msgid "Leave team"
 msgstr "Quitter l'équipe"
 
-#: apps/participation/templates/participation/team_leave.html:7
+#: apps/participation/templates/participation/team_leave.html:9
 msgid "Are you sure that you want to leave this team?"
 msgstr "Êtes-vous sûr·e de vouloir quitter cette équipe ?"
 
 #: apps/participation/views.py:32 templates/base.html:77
-#: templates/base.html:228
+#: templates/base.html:230
 msgid "Create team"
 msgstr "Créer une équipe"
 
-#: apps/participation/views.py:39 apps/participation/views.py:69
+#: apps/participation/views.py:39 apps/participation/views.py:72
 msgid "You don't participate, so you can't create a team."
 msgstr "Vous ne participez pas, vous ne pouvez pas créer d'équipe."
 
-#: apps/participation/views.py:41 apps/participation/views.py:71
+#: apps/participation/views.py:41 apps/participation/views.py:74
 msgid "You are already in a team."
 msgstr "Vous êtes déjà dans une équipe."
 
-#: apps/participation/views.py:62 templates/base.html:82
-#: templates/base.html:224
+#: apps/participation/views.py:65 templates/base.html:82
+#: templates/base.html:226
 msgid "Join team"
 msgstr "Rejoindre une équipe"
 
-#: apps/participation/views.py:97 apps/participation/views.py:248
-#: apps/participation/views.py:259
+#: apps/participation/views.py:103 apps/participation/views.py:254
+#: apps/participation/views.py:280
 msgid "You are not in a team."
 msgstr "Vous n'êtes pas dans une équipe."
 
-#: apps/participation/views.py:98 apps/participation/views.py:260
+#: apps/participation/views.py:104 apps/participation/views.py:281
 msgid "You don't participate, so you don't have any team."
 msgstr "Vous ne participez pas, vous n'avez donc pas d'équipe."
 
-#: apps/participation/views.py:137
+#: apps/participation/views.py:143
 msgid "You don't participate, so you can't request the validation of the team."
 msgstr ""
 "Vous ne participez pas, vous ne pouvez pas demander la validation de "
 "l'équipe."
 
-#: apps/participation/views.py:140
+#: apps/participation/views.py:146
 msgid "The validation of the team is already done or pending."
 msgstr "La validation de l'équipe est déjà faite ou en cours."
 
-#: apps/participation/views.py:153
+#: apps/participation/views.py:159
 msgid "You are not an administrator."
 msgstr "Vous n'êtes pas administrateur."
 
-#: apps/participation/views.py:156
+#: apps/participation/views.py:162
 msgid "This team has no pending validation."
 msgstr "L'équipe n'a pas de validation en attente."
 
-#: apps/participation/views.py:175
+#: apps/participation/views.py:181
 msgid "You must specify if you validate the registration or not."
 msgstr "Vous devez spécifier si vous validez l'inscription ou non."
 
-#: apps/participation/views.py:232 apps/registration/views.py:213
+#: apps/participation/views.py:238 apps/registration/views.py:213
 #, python-brace-format
 msgid "Photo authorization of {student}.{ext}"
 msgstr "Autorisation de droit à l'image de {student}.{ext}"
 
-#: apps/participation/views.py:236
+#: apps/participation/views.py:242
 #, python-brace-format
 msgid "Photo authorizations of team {trigram}.zip"
 msgstr "Autorisations de droit à l'image de l'équipe {trigram}.zip"
 
-#: apps/participation/views.py:269
+#: apps/participation/views.py:256
+#, fuzzy
+#| msgid "The validation of the team is already done or pending."
+msgid "The team is already validated or the validation is pending."
+msgstr "La validation de l'équipe est déjà faite ou en cours."
+
+#: apps/participation/views.py:290
 msgid "The team is not validated yet."
 msgstr "L'équipe n'est pas encore validée."
 
-#: apps/participation/views.py:278
+#: apps/participation/views.py:299
+#, python-brace-format
 msgid "Participation of team {trigram}"
 msgstr "Participation de l'équipe {trigram}"
 
@@ -533,7 +540,7 @@ msgstr "rôle"
 msgid "participant"
 msgstr "participant"
 
-#: apps/registration/forms.py:16 apps/registration/models.py:143
+#: apps/registration/forms.py:16 apps/registration/models.py:147
 msgid "coach"
 msgstr "encadrant"
 
@@ -554,75 +561,75 @@ msgstr "email confirmé"
 msgid "Activate your Correspondances account"
 msgstr "Activez votre compte des Correspondances"
 
-#: apps/registration/models.py:74
+#: apps/registration/models.py:78
 msgid "registration"
 msgstr "inscription"
 
-#: apps/registration/models.py:75
+#: apps/registration/models.py:79
 msgid "registrations"
 msgstr "inscriptions"
 
-#: apps/registration/models.py:94
+#: apps/registration/models.py:98
 msgid "12th grade"
 msgstr "Terminale"
 
-#: apps/registration/models.py:95
+#: apps/registration/models.py:99
 msgid "11th grade"
 msgstr "Première"
 
-#: apps/registration/models.py:96
+#: apps/registration/models.py:100
 msgid "10th grade or lower"
 msgstr "Seconde ou inférieur"
 
-#: apps/registration/models.py:98
+#: apps/registration/models.py:102
 msgid "student class"
 msgstr "classe"
 
-#: apps/registration/models.py:103
+#: apps/registration/models.py:107
 msgid "school"
 msgstr "école"
 
-#: apps/registration/models.py:107
+#: apps/registration/models.py:111
 msgid "photo authorization"
 msgstr "autorisation de droit à l'image"
 
-#: apps/registration/models.py:115
+#: apps/registration/models.py:119
 msgid "student"
 msgstr "étudiant"
 
-#: apps/registration/models.py:123
+#: apps/registration/models.py:127
 msgid "student registration"
 msgstr "inscription d'élève"
 
-#: apps/registration/models.py:124
+#: apps/registration/models.py:128
 msgid "student registrations"
 msgstr "inscriptions d'élève"
 
-#: apps/registration/models.py:138
+#: apps/registration/models.py:142
 msgid "professional activity"
 msgstr "activité professionnelle"
 
-#: apps/registration/models.py:151
+#: apps/registration/models.py:155
 msgid "coach registration"
 msgstr "inscription d'encadrant"
 
-#: apps/registration/models.py:152
+#: apps/registration/models.py:156
 msgid "coach registrations"
 msgstr "inscriptions d'encadrants"
 
-#: apps/registration/models.py:157
+#: apps/registration/models.py:161
 msgid "role of the administrator"
 msgstr "rôle de l'administrateur"
 
-#: apps/registration/models.py:162
+#: apps/registration/models.py:166
 msgid "admin"
 msgstr "admin"
 
-#: apps/registration/models.py:170
+#: apps/registration/models.py:174
 msgid "admin registration"
 msgstr "inscription d'administrateur"
 
-#: apps/registration/models.py:171
+#: apps/registration/models.py:175
 msgid "admin registrations"
 msgstr "inscriptions d'administrateur"
 
@@ -714,7 +721,7 @@ msgid "Your password has been set. You may go ahead and log in now."
 msgstr "Votre mot de passe a été changé. Vous pouvez désormais vous connecter."
 
 #: apps/registration/templates/registration/password_reset_complete.html:10
-#: templates/base.html:130 templates/base.html:219 templates/base.html:220
+#: templates/base.html:130 templates/base.html:221 templates/base.html:222
 #: templates/registration/login.html:7 templates/registration/login.html:8
 #: templates/registration/login.html:25
 msgid "Log in"
@@ -869,11 +876,11 @@ msgstr "Mail de confirmation de l'adresse mail envoyé"
 msgid "Resend email validation link"
 msgstr "Renvoyé le lien de validation de l'adresse mail"
 
-#: corres2math/settings.py:151
+#: corres2math/settings.py:154
 msgid "English"
 msgstr "Anglais"
 
-#: corres2math/settings.py:152
+#: corres2math/settings.py:155
 msgid "French"
 msgstr "Français"
 
@@ -943,8 +950,8 @@ msgid "My participation"
 msgstr "Ma participation"
 
 #: templates/base.html:100
-msgid "Make a gift"
-msgstr "Faire un don"
+msgid "Chat"
+msgstr "Chat"
 
 #: templates/base.html:104
 msgid "Administration"
@@ -970,7 +977,7 @@ msgstr "Mon compte"
 msgid "Log out"
 msgstr "Déconnexion"
 
-#: templates/base.html:161
+#: templates/base.html:162
 #, python-format
 msgid ""
 "Your email address is not validated. Please click on the link you received "
@@ -981,11 +988,11 @@ msgstr ""
 "avez reçu par mail. Vous pouvez renvoyer un mail en cliquant sur <a href="
 "\"%(send_email_url)s\">ce lien</a>."
 
-#: templates/base.html:184
+#: templates/base.html:186
 msgid "Contact us"
 msgstr "Nous contacter"
 
-#: templates/base.html:217
+#: templates/base.html:219
 msgid "Search results"
 msgstr "Résultats de la recherche"
 
diff --git a/templates/base.html b/templates/base.html
index e4bd5bc..8cd6fc7 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -96,8 +96,8 @@
                     {% endif %}
                 {% endif %}
                 <li class="nav-item active">
-                    <a class="nav-link" href="https://www.helloasso.com/associations/animath/formulaires/5/widget"><i
-                            class="fas fa-hand-holding-heart"></i> {% trans "Make a gift" %}</a>
+                    <a class="nav-link" href="{% url "participation:chat" %}">
+                        <i class="fas fa-comments"></i> {% trans "Chat" %}</a>
                 </li>
                 {% if user.admin %}
                     <li class="nav-item active">
@@ -150,6 +150,7 @@
             </ul>
         </div>
     </nav>
+    {% block fullcontent %}
     <div class="{% block containertype %}container{% endblock %} my-3">
         {% block contenttitle %}{% endblock %}
         {% if user.is_authenticated and not user.registration.email_confirmed %}
@@ -171,6 +172,7 @@
             {% endblock content %}
         </div>
     </div>
+    {% endblock %}
 </main>
 
 <footer class="bg-light text-primary mt-auto py-2">