I have successfully created an OpenVPN server by using a VPS running Ubuntu 18.04. I have also successfully connected to the VPN on my laptop. I would instead like to configure my Router to connect to my VPN server. My router has DD-WRT firmware installed and I also have the OVPN config file, but I am unsure of what info I need from my config file to configure my router.
I can help you with this. Been using openvpn for many years. I used to deploy routers with ddwrt and openvpn clients. let me know if you would like to get started.