HEllo I wanted to share my experience with site to site VPN using OVPN but instead of those lengthy setups and lots of config changes which I always think there must be a quick and easy way.
here is my trick that worked for me.
on the server side tick this option:
Redirect Gateway X
Force all client generated traffic through the tunnel.
on the client side just go and in the advanced box add this option:
redirect-gateway
hit save and with this option you will pass everything through the tunnel.
just make sure to enable compression so that you make better network traffic.