Airplay uses Bonjour. I really don't know what that means, but I wonder if that has anything to do with the issue.

@ArcherC8 Thanks for the reply! I reset all devices (had them forget their networks), powered down everything and restarted. Then re-setup everything. No luck. I do see the ethernet-connected devices...

After replacing my previous router with an Archer A20 (Archer C4000), I can longer access any Airplay devices from a wifi device such as an iPhone. All Airplay devices are connected to the router via...

@John20 I'm having the same problem. In fact I disconnected mt TP-Link router and re-connected my old router. Everything worked perfectly. Then switch to the TP-Link and it didn't work.