Hi Brian, sorry about that! The last release was running into a engine bug that that caused clients and server to slow down to a crawl after a few minutes. It took a long time figure out what was going on and work around the bug. I've also filed a bug with the Godot game engine and made a demo project so that the devs can fix the issue generally.
I'm currently compiling new version of the server and clients which should have the fix plus some new features (including bombs if you press alt). I hope to have it up in the next few hours. Moving forward you can host local dedicated servers from the "Advanced" menu at the login screen and I'm also working on an offline mode. Thanks for your patience and for posting about the issue :)