Hmmm, I’m listening in regards to WIFI. I have a Yamaha rxa680bl downstairs where I’m a little more curios on the music. Yes, it is Bluetooth capable but reception is terrible on it. May be a defect but bought it open box.
my real receiver is upstairs in the “theater”. But that one is not a problem.
If the AVR is in a cabinet and surrounded by other equipment, on the far side of a fireplace when you try to use BT or some other heavy objects, don't expect BT or radio to work well. Did you attach both antennas for WiFi and BT? If not, do that- it's absolutely necessary.
You should read the manual- of all ways to connect to this AVR and stream from your phone, BT is the worst. This AVR has an ethernet port- use it. If WiFi connection works, fine, but hard-wired is always best and you should download the MusicCast app, so you can not only stream from the phone, you can also control the AVR functions like source selection, volume, zone control, etc.
Also, once the ethernet cable is connected (or, you connect to the network via WiFi), find the AVR's IP address, open the browser on your computer and enter the address with /setup at the end. This opens the setup menu and it's far more complete than what the on screen display shows.