We’ve gone back into maintenance mode due to an unusual issue with the way the servers were reacting after the Xmas update.
We’re working to get the game back up and running smoothly as soon as possible.

Once we’re confident everything’s working smoothly again, we’ll hand out an additional 1-day premium promo-code to make up for anyone that’s already activated theirs and are unable to play.

Updates to the situation can be found here:
http://robocraftgame.com/down-for-maintenance/