For some reason, on my 2 computers if i run the VPN plugin from FireFox, it says it is connected, but no webpage works. If i use the full app to connect it works just fine.
I tried to restart FF. I logged in and out of ProtonVPN via the plugin. I made sure that there were no updates to ProtonVPN plugin. nothing works. I tried different servers in different countries (either using quick connect, or manually selecting something in my own country, or another). Nothing works.
I did rebuild my firewall tonight, but not sure if that would have caused anything. I can browse normally without the plugin, or i can browse just fine using the full app. When i rebuilt the firewall, i manually entered all the ports I had before and everything else I have seems to be working.
edit: if i enable secure core then it works.