I have a fully fresh Zomboid 42.13.1 Nitrado server install with no altered settings apart from the name. I have a fully fresh game with no mods or anything. When I connect to some random server, everything works fine. However, I cannot connect to the Nitrado server. It shows up in the public server list, but when I connect to it, it says Joining game... endlessly. My friend has the same issue. After countless resets both server-side and client-side, nothing seems to help. I'm at my wits end here, since this issue has been ongoing for weeks.
The server log stops after sending the connection-details. Nitrado's own support is quite unhelpful, and only says 'I checked your server and managed to query and connect to it.'. Does anyone have a tip on how to fix this?