Configuring ProtonVPN

I am looking to start using my VPN service with my Vero 4k+ devices. As an extreme novice to linux, I am not sure where to start and hoping someone may be able to provide some guidance. I have read from the VPN support site, there are 4 options for installing on Linux based systems, but again, need some help picking one and maybe some pointers to potential issues. The link to their site is https://protonvpn.com/support/linux-vpn-setup/.

Any help is greatly appreciated.

Should be supported by this Kodi Addon

Thank you.