Sorry to hear about the issues. The issue with the 'Ready' toggle after the first match is known and I did not manage to narrow the bug down before the deadline. But I will fix it in some days, there is something I did not clean up properly on the client-side.
Reusing the same match name is tricky because the disconnecting is flaky and might take 3 minutes to be detected. The safest thing to start a second match right now is to relaod the page and use a new match name.
Anyhow, thanks for the kind words and for trying it out :)
My other, non-jam multiplayer game, M.U.D.-Match is less flaky. Might want to give it a try, too :)