Please elaborate on why you gathered that I wanted to use Zobboided because of the various providers?
I specifically called out that I wanted to access my OpenVPN server.
I will adjust my posts in the future to take your feedback into consideration.
I only read your recent post asking an alternative to adding openvpn client nothing else. Generally speaking that add-on exists to make the process of connecting to vpn providers easily, even though it has the ability to use custom setups so I assumed, my mistake.
My suggestion to use gluetun would still stand as it offers the same + custom setup as well along with checking if your VPN connection is still working every 30s, out of the box and you can use webui to manage it.
If a toggleable button in UI is your goal (under connection in Kodi settings), I'm not sure if this will work but connman(the official one) supports openvpn connections as well but I don't know if libreelec version has that. As I understand it, it was implemented to make wireguard connections.