GitLab upgrade to version 17.6.2 on Monday (https://go.epfl.ch/CHG0045788) may have caused issues for users using password authentication for git push and similar. Workaround at https://go.epfl.ch/gitlab-regained . Please reach out directly to gitlab-admins@groupes.epfl.ch, Cc 1234@epfl.ch if you are still in trouble after attempting the workaround.