Os Version: Ubuntu Server 19.10
Cube Coders Product: Amp 220.127.116.11
Module Used: Generic Module (Valheim)
Issue: Server does not show up on the server list for any of my friends (I expect it to be a port forwarding issue, but I cant seem to find out exactly what is wrong). The server shows up on Valheim and on my server browser on steam, but it doesn't show for anyone else that's trying to connect. I have a suspicion that perhaps the default ports given (5678-5680) might have something to do with it, but I'm not entirely sure that is the case.
Steps Tried to Resolve: I've tried incrementing the port from the link by one as mentioned by another post on the support page. This made it so people could see the server is active, but still does not allow them to join. I've also tried to change the ports to the default values to no avail.
Update: Other players have managed to join using the join game feature on steam, but they still cannot join from the server list.