currently there's an issue with the forums, where new logins are not working.
Those that still have valid session cookies are not affected and will still be logged in.
As we're not able to login to the admin panel, our sysadmin team needs to take a look
https://ml.mageia.org/l/arc/sysadmin-discuss/2018-08/msg00036.html
The error message during login is as follows:
Bad Gateway!
The proxy server received an invalid response from an upstream server.
If you think this is a server error, please contact the webmaster.
Error (none)