Unvalidate e-mail when the user changes it, but the user still active

templates/base.html

@@ -138,6 +138,11 @@ SPDX-License-Identifier: GPL-3.0-or-later
         </div>
     </nav>
     <div class="container-fluid my-3" style="max-width: 1600px;">
+        {% if not user.profile.email_confirmed %}
+            <div class="alert alert-warning">
+                {% trans "Your e-mail address is not validated. Please check your mail inbox and click on the validation link." %}
+            </div>
+        {% endif %}
         {% block contenttitle %}<h1>{{ title }}</h1>{% endblock %}
         <div id="messages"></div>
         {% block content %}