I can't connect the game after It say i get Bug and kick me out of the game

I can't play the game after i get bug, when i trying to connect back the game, it say 'We're unable to log you in because you may be offline' and not let me login.After two hour when i login in back,It give me a 'LOW PRIORITY QUEUE', I feel sad when i get this message and i must wait 20min before enter the game.Please fix this bug.