I will just add it here, as it wasn't clear for me that I had to use OpenVPN credentials, not account credentials to login.
Hance, if you get the error
[!] Authentication failed.
[!] Please make sure that your Username and Password is correct.
make sure to use OpenVPN credentials (not your account username and password). The credentails are in Account-> OpenVPN / IKEv2 username if you login to ProtonVPN website.
Pinned Comments
exprez135 commented on 2020-12-21 07:25
Regarding updates to protonvpn-cli-ng as the new official client is rolled out: the official client is still in beta and, as of this moment, is not available for Arch. Once the app exits beta, its source will be released and we will be able to either update this package or create a new one (the new official client does not yet support all the features of this Community version).
Anyone can feel free to email me with updates at my public inbox: ~exprez135/public-inbox@lists.sr.ht.