Need Some Help with OpenVPN

SOOOOOO, after receiving a notice from my ISP that I need to stop accessing UK content or legal action will occur, I got a VPN. ProtonVPN. (And yes, the free plan, as I am a broke person. The free plan does not include the config files, sadly) Included with my account is an OpenVPN account login. Now, I'm not a noob when it comes to kodi, but I cannot figure out how to use an OpenVPN account with either the OpenVPN extension or the Manager for OpenVPN. And I did Google it, and just got back crap that doesn't help. SO I am asking you many people of this forum, How do I do use my OpenVPN account detail given to me by ProtonVPN on my Raspberry Pi 3B+ running Libreelec 9.1.002 ?