I've recently purchased a new wifi router (Archger AX21) to replace router that died. The old router (Asus RT66U) allowed me to see and ping devices on either side (wireless and wired) of the router. I have four PCs on the wired side and two wireless laser printers (Brother HL-L2340DW) on the wireless side. I've had this configurartion working for many years.

The same configuration with the new TP-Link router does allow me to do this. I did get a firmware update to version 1.1.0 when I first set up the router. Hardware version is v4.6.

Do I have to add a routing entry in the router? How would this work? Both are on the same (192.168.0.x) network. All of the PC/servers  and the wireless printers have static IPs. DHCP is only used for phones and tablets. They can't see the printers either.

Suggestions? Solutions?