Hello

We had a Deco M4 installed recently. We have a combo modem/router with Wifi turned off and one LAN port goes to the main DECO which is acting as the MAIN.  The old router routes a connection to a room with a computer and a printer (HP Mulitfunction)  which are wired to ethernet via a switch.  We have 2 issues. 1) Our apple devices can't airprint to the printer now - they can't find it - whereas when before the deco there was no problem.  2) Our laptops also can't find the printer via wifi - which we could also do before. The printer does not have a wifi card - but does have airprint capability when wired to a network.  Would appreciate some advice