Airplay on the Up2Stream Amp

Hi guys,

Bought two Up2Stream Amp recently.
Connected to internet: check
Able to play internet radio: check
Able to play spotify: check
Able to play Airplay: uncheck

I bought this exact brand to get airplay support (because I use apple music), but our ipads / iphones can’t stream to the Up2Stream Amp through airplay.

any advice as to how to troubleshoot this?

thanks for the help
br. A