Since about 3 weeks ago, live audio on shared cameras has disappeared.
This is not OS or phone specific and doesn’t happen on the main account, only on cameras shared with family members. Very annoying and also a security issue.
Have logged the problem with support but no solution forthcoming.
What firmware are you using?
There was a recent beta firmware doing this, but the latest beta firmware resolved it for me, though I didn’t check shared accounts yet.