PvP and CoOp will be back online by 8pm tonight. We are testing various part of the server code right now, to make sure there are no more crashes and last night`s update disabled certain PvP components. Sorry for the inconvenience - but happy to say we have almost reached the end of our server update sage.
And sorry for not communicating thing better and earlier. To make up for the problems of the last 5 days, we got an awesome patch on the way - with lots of gore and blood, and cool features like viewing information about other players or sending resources to other players.