I am having this issue as well and I am extrememly confused how to troubleshoot a solution for it.
My AAX plugin in pro tools is getting audio and everything seems good to go.
My iphone app connects to the group and both parties show up on the corresponding devices.
When I press play there is no signal whatsoever being picked up by the iphone app.
Please help!
Super excited by this tool for the same reasons, checking mixes on different devices without having to bounce and streaming mixes/masters to clients in real-time for instant feedback.
Thank you!!!