XF 2.0 Not able to log in as Admin

[kankan]

Hello
From some reason, and suddenly, i am no more able to log in into Admin CP.
I tried both of my admin account, none worked.
The system does not display "Wrong password", but just reload the login/pass area.
I can connect to frontend without problem.
I tried to grant super admin to a test user with SQL request, then set this user as superadmin in config.php : this was not working..

I changed my registar DNS to apply to an Advertising program. Could that hurt the admin panel ?
Does xenforo contain any protection to disable this admin login function due to multiple requests (DDoS > Fail2ban) ?

Where can i look for potential errors in database ?
Thank you

 

[Ozzy47]

Did you try disabling addons via config?

 

[kankan]

Thank you.
Found the issue.
A partner had set up a Proxy for testing purpose and it messed up some cache...
We turned it off for the admin access.

 

[Ozzy47]

Excellent, glad it's sorted.