Try again in an hour or so for multiple times. This stupid game doesn't tell you if you're banned or actually having connection issue with the server.anybody can get pass the login screen? stuck at press start
Sometimes it's the server acting up and you'll be fine an hour later, or sometimes you're actually banned. My main account is safe because I use the mod conservatively, I never used atk multiplier and bloats my EP.
But my 2nd account I tested for bloated EP is banned. It's confirmed that they ban the super obvious cheaters, but not everyone. Well, they can't...