19.2 upgrade: "unable to display registration and license information"

I can't change my license server to the IP address or the Server name!!  Tells me license server 127.0.0.1 is not available (don't even recognize that number) or the license server is not open for communication on port number 48750...

Can't figure this out --

Running Windows Home Server 2011 -- never had a problem w/license server updates on any of the 16, 17, or 18.x versions I've run on this server.

Help! -- I have to run payroll by Friday morning.

Jill