Proton cli login error when trying to log in via cli

VPN
1

Unknown API error. Please retry or contact support.

Sentry is attempting to send 3 pending error messages

Waiting up to 2 seconds

Press Ctrl-C to quit

2

The CLI isn’t supported for the last version of the client for Proton VPN on Linux.

Please consider installing our native client: https://protonvpn.com/support/linux-vpn-setup or a manual configuration if you’re on an unsupported distro: https://protonvpn.com/support/wireguard-linux

3

what are the reasons for stopping the support?

4

We released a new completely written version of the native client last year, with which the old CLI is no longer compatible. See this comment (and entire thread) for more info: https://www.reddit.com/r/ProtonVPN/comments/1ftn22s/comment/lptgnmi/