New router will not recognize MG3620

[Flummoxed]

O/S is High Sierra 10.13.6.  Printer was working fine prior to installing a new TP-Link Archer 7 router.  After installing new router, printer was idle and unconnected.  WiFi lamp was on; nothing was blinking.  Decided to delete printer from Printers & Scanners and then do a new wireless connection setup.  Tried to add printer but it does not show up as available.  WiFi lamp continues to be on with nothing flashing.  Downloladed new printer drivers from Canon and checked to make sure router had latest firmware update.  Not sure what to do.    

[Patrick · Accepted solution]

Hi Flummoxed,

Please ret resetting the wireless settings on your PIXMA MG3620.  To reset the network settings of your PIXMA MG3620, please press and hold the Stop button and release it when Alarm lamp flashes 21 times.

Once reset, please attempt set up again.