To our loyal fans still playing Underworld: we have confirmed that the game server has been hacked last week, which is why it’s not working properly at the moment.
Good news is that no harm has been done, all game data is backed up and your personal data is safe. We have taken measures against further attacks and now waiting for our service provider to unblock the troublesome server. Hopefully, the game will get back to normal today.
Sorry it took us so long to figure this our and inform everybody about the problem, we’ll keep you posted on the progress.
Update: a few more changes to the server environment requested by our provider to eliminate potential exploits. Fixes in progress.