I use AR to send messages to my computer/Event Host. Works well with an internet connection without a vpn, however, I can't get through the VPN. I can access other services via VPN.

I have my own ddns installed in the Eventghost AR plugin.

It usually happens with that soft tbh. They block the "suspicious" IP usage, so that's why they don't wanna work with VPN enabled. I've tried to fix this issue installing different plugins, but it didn't help much. I don't know for sure but the problem is probably in VPN itself. What kind of soft do you use? I personally have a NordVPN but as I learned it sometimes has troubles with different apps. Anyway, I found a good review about expressvpn at https://bestvpnprovider.co/express-vpn-review/ and it has some interesting options. Don't know if it's gonna help me, but at least I will try.