Printer wont load, Grabcad print needs to restart to fix this issues

Typed in IP address to add printer:

error:

GrabCAD Print requires to resolve an issue, if the problem persists after a restart please contact print@grabcad.com

How do you officially restart grabcad print? are there processes to kill or is the file>>quit good enough.

Anyone else run across this issue? Literally everything was working fine until yesterday.