iOS or iPhone app does not show participants camera or hear voice

Hi All,
I have installed Jitsi using the Quick Install guide. Everything on the web works great. I can have multiple users join and do both video and voice calls using the Chrome web browser.
I cloned the Jitsi-meet code from the github and followed the tutorial to build in xcode. Everything up to building and uploading for TestFlight worked great.

I can initiate a conference from the iPhone. It shows the microphone activated. I see myself in the camera view.
When a participant joins the meeting, I can see that participant but can not hear or see the camera. The other participant can see that I joined the meeting but they also can not seee me or hear me.
However, the chat functionality works.

I tried with both the https://meet.jit.si backend URL and my custom URL. And the behavior is the same in both cases.
Any pointer how to resolve this issue will be greatly appreciated.
Thank you,
–Sam