Same issue here. Think the login server is down. My game was getting really poor frame rate, so I changed resolution/graphics and when I tried logging back it wouldn't let me in. My cousin was having issues logging in while I was doing my last map, figured it might just be something on his end until I couldn't get back in myself. Hopefully an admin can fix it soon
It's still pretty early in Netherlands, so might be a bit before the admins are awake/notice. Time for me to create a rant/thread on the balancing of the game. Seeing as it seems the Admins have chosen not to change the cards much (if at all) from the vanilla game.