northertech

With TCP there are built in listeners on OSs which you can use to test. Also TCP will work before UDP. For whatever reason firewalls and such do weird things with UDP traffic. I always use a cli tool that I can't remember the name of for testing.

Yes it is uncommon, as people have mentioned it is a Wireguard wrapper. Try just using Wireguard and troubleshoot from there. I would want to know what that 'simple' solution is failing. Your workaround could have similar issues.