This error is received when our licence server is not accepting requests for your Mac computer. Can you please reach out to firstname.lastname@example.org regarding the error and send the Mac System Serial number so that we can ensure that our license server accepts requests from your Mac computer.
To get the serial number:
- Go to the Apple menu and click “About this Mac”
- In the window that opens click more info.
- In the new window, the key is listed as “Serial Number”