VPN port forwarding for Pi nodes?

Hey all,

Recently moved cross-country into a new apartment with community internet. I just spent all night trying to get my node back up and running with a new Raspberry Pi setup, only to discover that the ISP blocks port forwarding on the community internet.

I came across this thread where Alexey mentions options to get around port forwarding blocks with VPN. PIA, portmap.io , purevpn, ngrok all come up as options.

Has anyone running a Pi node/Linux setup tested one of these options, and is there a good process to setting it up?
I’m leaning towards Portmap, but Ngrok seems like it would be more compatible with the Pi. Eyeballing a setup guide here. Can anyone confirm if this would work?
Would I still need my No-IP DDNS hostname to use NGrok or Portmap?

Thank you in advance for any help available!