friend can't include their audio into my broadcast through the xbox app on phone

ok so. i have a friend that plays ps4 and game chat audio doesnt pick up on my stream (im xbox one s streaming on twitch)

so he downloaded the xbox app on his phone so that i could add him into a party and have him on my stream, but he doesnt have the option to include his audio. he's changed everything in his privacy and online settings so it should be letting him join, but there's just no option for him to include his audio. is there a way to fix this?

submitted by /u/Badbihhh6
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