Docker container cant connect to PIA VPN

[TheGreatBellend]

So i run a set of docker containers on a home server, one of them I run through a VPN, i receive this error when trying to connect to it:

[warn] Unable to successfully download PIA json to generate token for wireguard from URL 'https://www.privateinternetaccess.com/gtoken/generateToken'

I have opened DNS to the docker container to rule that out, unblocked private networks to rule that out, I have gotten to the point where I almost want to just open it to the world and call it a day, but for obvious reasons am uncomfortable with that.

It worked just fine when I was on Unifi, so the only network difference is running OPNsense, which causes me to believe this is the issue...

Has anyone else had this issue, or have any ideas on fixing it?