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 ethernet, and I've confirmed they all show up on the Network map. I can stream to them from and other device that is connected to the network via etherent, but simply cannot connect to them from a wifi device. 

The setup has worked flawlessly for years with my previous router, and I re-tested by swapping out the Archer with the old. Everything worked as expected.

It's as if ethernet devices and wifi devices are on two separate networks (but only the airplay devices). Ethernet and wifi devices can otherwise connect without issue. For example, I can airdrop files from iPhones to desktop macs just fine.

If it helps, these are the ethernet-connected Airplay devices:

- Apple Airport Express Gen 2

- Apple TV Gen 4

- Klipsch G-17 Airplay speaker

I can send audio to these devices all day from my mac mini (ethernet), but not from my iPhone.

Thanks in advance,

Jeff