Server gets stuck on [net] Game starts soon, waiting for 1 players.

[LinkachuGaming]

Pretty sure I am just being dumb but,
when i go to host a server the other party can see it, log in to the session and then connect to lobby
but when I start the game, the console gets ([net] Game starts soon, waiting for 1 players.)
and then the other party instantly disconnects. If logs are needed I am willing to share them

[mmatyas]

Hm, it sounds as if the other party gets disconnected right at the time the game would start. Since the connection to the room seems to be fine, I suppose the network connection is otherwise stable, right? Do you see any errors in the server's or the game's log messages? Have you tried running the server on the other party's computer and joining to that? Or maybe with different devices?