On gestion.be-oi.be, one can change his user details (including his password) by clicking on "Coordinateur" and then "Modifier mes informations" when logged in. Although it works for some users, it seems like password modification are ignored for other users (e.g., using the exact same procedure, I could change my password for my teacher account xxx@uliege.be, but changing my password for my admin account xxx@be-oi.be has no effect).