I'm having issues with my UniFi UPS as well. I ran that command and I couldn't get it to connect unless I added the port I used as a socket at the end of the IP, so I'd have to do something like upsc
[email protected]:123 otherwise I got a connection refused. It only works if I have the credentials disabled. Is there a way in the manual config to point to a hostname or at least add the socket on the end of the IP?