Thank you for clarification. 
It wasn’t obvious because when clicking on https://discourse.gnome.org/c/site-feedback/3, instead of About the Site Feedback category I find Interacting with Discourse via email, and without attention I thought Site Feedback was dedicated to email discussions.
Is it the error I reported?
Sorry, I could not guess it was website content from your point of view, I thought that was related either to a bad use from me, or to the infrastructure. Thank you for your correction.
Right.
If I understand, I should go to GitLab for that, because there is no place here for this kind of question ?