Unlicensed printer
In this case you need to remove and reinstall the PaperOffice virtual printer:
To delete a printer, select the Start button and then Configuration . Go to Devices > Printers & Scanners > Select the Printer > Remove Device.
A window will open asking if you are sure to remove this device, confirm by clicking YES.
You can now close the Windows configuration window.
Open PaperOffice and enter Settings by clicking on the gear icon on the top right corner.
Enter settings and in the section Reinstall components click on Reinstall the printer
Now just follow the printer installation steps.