I assume you are using the PIA Linux app, and this is what cannot connect? First isolate if it is a OpenVPN issue or a PIA app issue. Try and connect via Network Manager first.

Receiving 'Your Connection is not Private' message Sep 16, 2014 Solved: When I connect my Private Internet Access (PIA Private Internet Access Network Adapter. Manufacturer Private Internet Access. Availability Running at full power. Status This device is working properly. Installed True. MAC Address 00:FF:1C:6B:8C:C7. Service Name tap-pia-0901. Driver Provider Private Internet Access. Driver Version 9.0.0.22. Driver Date 4/15/2018. Device Id ROOT\NET\0001 How to restore internet access to apps after the Windows Oct 16, 2018 Private Internet Access Not Connecting Just Says Loading

May 18, 2020

Computer connected to network, but NO internet access Jul 29, 2016

Jan 07, 2019

vpn successfully connected but no internet access"BEST