proton-vpn-gtk-app from home:mantarimay:protonvpn project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mantarimay:protonvpn/openSUSE_Tumbleweed/home:mantarimay:protonvpn.repo zypper refresh zypper install proton-vpn-gtk-app