Hey Romaric,

I am unable to access your site backend as backend url redirect back to frontend.
Please provide us with correct backend details as well as FTP details, so we will check it further.

Hello

I replied to you in my other ticket.

Thank you

I ve just saved the problem. Joomla user's registration was not allowed in easysocial.

Thank you.

Hey Romaric,

I've checked your site and found that not_registreded user is activated at your site, that's why new user couldn't register at site and details were getting attached to this account and this cause the issue.
I've deactivate this user, now registration seems working fine.

Please take a look again on this issue and do us update if still issue persist.

Thank you for understanding !