Sounds like you’ve gone down all the paths I can help with lol. Mine streams just fine using Frigate in HAOS and using RTSP. The two way audio doesn’t work quite yet but I also haven’t tried too hard to diagnose since the audio otherwise functions, so I’m assuming it’s just a configuration issue.

I also 3D printed a mount I found on Thingiverse since the ones it came with didn’t angle it far enough for my needs.