Zero-K has moved into a new server software because old one (UberServer) could not handle large number of players in tests.
This will allow faster development of Zero-K lobby, proper matchmaking etc, but unfortunately breaks compatibility with existing non Zero-K lobby clients, so please use Zero-K lobby for now.
Because it's a full rewrite of lobby server with changes done to springie autohosts, zero-k lobby and website/nightwatch, do expect some quirks. Bug reports are very much welcome at
https://github.com/ZeroK-RTS/Zero-K-Infrastructure/issues