I have a Denon x1500h AVR that I connect to with my iphone and stream Amazon Music and Spotify. Many of the times I see Denon AVR listed as Airplay device and can stream to it just fine but half the time the device is not listed and the only solution is to turn off power to Denon and it again starts showing up. I have tried everything (connecting with LAN cable, firmware upgrade etc etc) but for no avail. Does anyone else face this issue?