It actually boggles my mind that this hasn't been fixed yet. It completely ruins the experience and after a 7 week delay, this is what we get. If you're in EU change the server to US (or visa versa) and it works, you can even see the clan roster of other people who have switched from your clan... People have mentioned it was fine until they added an app user to their clan, then it went to shit. Karma for the ludicrous "#SocialFeatures" of this Mega Drive game.

You'd think it's one of the things they would hotfix asap

You could always try using the NDU reg tweak. Head to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Ndu then find the key called start and change it from 2 to 4. Once you have done this simply reboot, its fixed the ram leak for me. Its also safe i have been running my game with this without issue of a ban. WARNING: Reg edits can be dangerous so its always advised to make a system restore point before making any adjustments to the registry.