Have you directed the audio via the ios? Is it possible the audio is being directed to, say, bluetooth?
At any screen, swipe up on the screen. The control center should be displayed. In the player (upper right on my iPhone) tap the little triangle ball thingy.
That should present you with a list of audio output targets. (Really wish Audiogon let us paste images) Select the Dragonfly or whatever appears. My Mojo shows up as Mojo.
Same iOS setup as you except a iphone 8 and a Chord Mojo.
At any screen, swipe up on the screen. The control center should be displayed. In the player (upper right on my iPhone) tap the little triangle ball thingy.
That should present you with a list of audio output targets. (Really wish Audiogon let us paste images) Select the Dragonfly or whatever appears. My Mojo shows up as Mojo.
Same iOS setup as you except a iphone 8 and a Chord Mojo.