I am trying to install a VPN connection on my rasberry pi (model: 4B), I am following along with NetworkChuck (https://www.youtube.com/watch?v=jlHWnKVpygw).
All my network seems to be working, I can connect to my wifi at home, and the Wifi adapter is being hotspot with a new name. The only problem I have is that I cannot install a vpn. And what I mean by that is that my OpenWRT software does have openVPN but I cannot start the .conf or .ovpn file.
The luci-app-openvpn package has a small 'trick'. After you configure your .conf file you will start 'save and apply' wait 10 seconds on the page and press enabled and 'save and apply'
Use mkdir to create a directory such as /etc/config/openvpnfiles and place your .ovpn file, certificates, etc there. Edit the /etc/config/openvpn file to point the instance of OpenVPN to the .ovpn file which you obtained from the VPN provider and stored in /etc/config/openvpnfiles. This is better than storing files in /etc/openvpn (as most guides say) because everything in /etc/config and under it will be preserved when you upgrade OpenWrt.