We have stopped hosting Zombie Escape/Mod servers, as per our Discord news from a few weeks ago:
In the near future, we will no longer be hosting any Zombie Escape/Mod esque server(s). If you were a fan of these game-modes, don't worry, as these servers are just being updated over to Otaku Gaming, not shut down. This was a joint decision between Otaku and us since our partnership ended a while ago, and they were the ones who contributed these game modes to our community. Any suggestions, bug reports, etc. should be redirected over to them from now on.