Cant log in

I keep logging with my account and password, same that im actually writing from now, and logged in forums few seconds ago. But in game launcher itkeeps telling me Incorrect username or password. I even doublechecked server, 3 times says, incorrect username or password.

EDIT: Also checked my smurf accounts, i cant log in any account, even tried my friends account.

EDIT2: Switched to EUW and tried my both accounts there, still nothing. Incorrect username or password.