I have been using this great addon with Leia builds (Coreelec 8.95.0) and it is working fine.
Coreelec doesn't make a intel version of their firmware, so I'll give the latest libreelec beta/alpha a try out.
Did you need to do anything special to get this addon to work?
(As in,did you update Coreelec to 8.95.0 with openvpn already installed or did you update and install afterwards?
Scratch those questions.
Libreelec alpha works fine.
I do admit it was a year since I last updated to kodi leia and the openvpn addon did not work then. It does now. Sorry for any inconvenience or annoyance caused.
You're doing fine work Zomboided, keep it up