For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:avicenzi:proton/openSUSE_Tumbleweed/home:avicenzi:proton.repo
zypper refresh
zypper install python-proton-vpn-logger
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:avicenzi:proton/openSUSE_Slowroll/home:avicenzi:proton.repo
zypper refresh
zypper install python-proton-vpn-logger
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:avicenzi:proton/15.6/home:avicenzi:proton.repo
zypper refresh
zypper install python-proton-vpn-logger