Update 3: We've concluded the maintenance and the servers are now live again. We'll see you on the arena!
Update 2: Unfortunately we have not been able to finalize the fixes yet. The current expectation of the Technical Team is that this will take another two hours. Our current ETA is 5pm EST [23:00 CET]
Update: Due to some unforeseen events with the fix for the Servers we are extending the maintenance in two hours. The game will be available at 3pm EST [21:00 CET]
This Monday [13/02/2017] at 5:30am EST [11:30am CET] we'll be doing a full maintenance on all our services, which means that everything - Game, websites, forums - may be offline for the entirety of the maintenance. We expect everything will be back online by 1pm EST [19:00 CET].
We will be deploying a fix for the issues the European servers are facing right now so they do not happen again on any of the servers.
For information on the issues:
http://steamcommunity.com/games/331360/announcements/detail/501425959369496879