How to get our Canon printer back online ?
https://www.tripoto.com/trip/how-do-i-get-my-canon-printer-back-online-3f520422f6a93a3d0
When a Canon printer is offline, your computer cannot communicate with the printer. Although the printer may still have power, the operating system believes the device is unavailable. As a result, documents remain in the print queue instead of being printed. The offline status can occur with both wired and wireless printers. In many situations, the printer itself is working properly, but a communication problem prevents the computer from sending print jobs successfully.