Tried to print this morning after being on leave for 3 weeks - took an hour to figure out how to solve this error message:
Error: “Printer Offline” when trying to Print your models
Cause: Wifi/Fiber Router was reset upon return from holiday - IP Address on Printer and IP Address in Creality Print are no longer the same.
Fix: Click “Add Scan” under the “Device” tab at the top of the Creality Print window: Prepare / Preview / Device. Device with the ‘old’ IP address will automatically disappear.
Hope it helps someone to not have to search the web for hours and use some spicy words before they can start printing