Printer stays Offline after installing new TP-Link router.

With previous Netgear the printer served 3 computers - 2 via wifi connection, 1 via ethernet cable from network switch.

Printer is connected to that network switch via ethernet cable;  the switch is fed with ethernet cable from the new AX5400 router.

   The printer IP address, 192.168.1.150, matches the address showing in Windows - Settings - the printer name - Properties - Ports.

  Could the issue be the Gateway setting at the printer itself ?

    It's an older Kyocera printer, with no built in wifi.  Has performed for years.