Recently I've installed Archer VR1200v as the new modem router for my home. While with the previous modem router (an old linksys WAG320) I've never had problem printing from my Apple devices via Airprint (printer: HP Envy 4500 all in one), now the same devices no longer can find any Airprint printer.

Things that I've already tried (in no particular order):

1) upgraded the firmware for the modem router

2) upgraded the OS for the iDevices

3) rebooted the modem router

4) turned the modem router off and on again

5) turned the printer off and on again

6) turned the iDevices off and on again

7) turned on and off the IGMP snooping option and then turned everything off and on again (suddenly the printer was detected briefly, and then no longer after the iDevices were disconnected from the wifi network and then connected back again)

8) forget all the printers and all the networks on my macbook and starting all over

9) changing dns to Google DNS

10) tried connecting the printer to the wifi network again

11) turned off the 5G network in order to have only the 2.4Ghz one

12) set a manual fixed ip for the printer (it then works if I add it as an IP printer from the macbook, but not from other devices, and the scanner is not detected anyway)

13) Read all the guides and troubleshooting articles I could find from HP, Apple, TP-link and other websites

14) I cannot longer remember. I've battled with this for almost a month.

Yes,

1) I can access the printer settings via browser from my iDevices by typing the printer IP address

2) I can detect the printer normally and print from my Windows PC

3) I can access the modem router via browser from my iDevices by typing the modem router IP address

4) the printer and the iDevices are connected to the same wifi network

5) yes Airprint is supported by my printer and both Airprint and Bonjour are enabled on the device

I'm rather desperate. Can anybody help?

Thanks!