Plugin Manager Empty / Not Loading Any Plugins in Glyphs 3.4

Plugin Manager shows no content, preventing installation of required plugins (screenshot attached). Related to newly installed Glyphs 3.4.

Do you have firewall that blocks outgoing network trafic?

Oh I see! Thank you Georg for the quick rescue.
I have a NORD VPN running. I just disabled it but Plugin Manager still not working.

Did you restart Glyphs and maybe even your system?

Thank you, Georg. The two issues are resolved. You can close both.