How do I configure a vpn connection?

Almost set up a protonvpn connection, now getting this message when I open YAST network:
Network is currently handled by Network Manager or completely disabled. YaST is unable to configure some options, to the effect that I don’t see any option anywhere to add a connection. What to do? I reinstalled YasT network and a host of other network utilities, but to no effect, I am still getting the same message. Please help.