PIXMA G7020 won't work on Macbook Air, works OK on other devices

[M_McCarty]

• I have a Canon PIXMA G7020
• I added the printer through System Settings - Printers and Scanners
  • The printer worked fine.  I was able to print from my MacBook to the printer and receive scans from the printer.
• The paper settings became unusable on the printer and I reset it to “Factory Settings”
• After reconfiguring the WIFI settings on the printer I have been unable to print from my MacBook.  The printer works fine from our Windows notebook, iPhones and iPads. 

• When printing the printer shows green in System Settings.  As soon as I try to print, it switches to “Paused”.

• I have deleted the printer, reset Printing System and restarted my MacBook.  I have even tried installing the printer using Canon utilities.   The certificate issue persists.
  I opened an Incident with Apple and they escalated to the experts.  I was told this is a Canon issue and not a MacBook issue.  MacOS doesn't use certs to print.  I don't know how to proceed from here.

Thanks for any support you can offer.

[misteralex844]

It’s a Canon driver issue, not a macOS problem. After the factory reset the printer is now serving a new or invalid TLS certificate, and the Canon Mac driver pauses the queue when it can’t verify it. The fix is usually to remove all Canon drivers, reinstall the latest G7020 driver package from Canon’s site, and then add the printer using “IP → Internet Printing Protocol (IPP)” instead of AirPrint. This forces macOS to bypass the bad cert and restores normal printing.

[M_McCarty]

Thank you for the response.  I have followed your suggestions and I’m still receiving Invalid Certificate error.  I don’t know if I should generate a self-signed certificate using the Remote UI or not.  I don’t want to dig a deeper hole, since this printer works on our Win notebook, iPhones and iPads.

Thank you for any advice.