CBR750 problem with connection and setup

Iwas testing and resetting over last days. I was able to setup orbi using mobile app with temporary network name and password. I think problem is that if I try from the beginning using my original network name all 50devices are trying to connect to orbi during setup and orbi is blocking that. After everything was setup with temp network I changed network name to my original "AB-wifi" and almost everything works fine.
I still have my original problem that people are complaining that I am dropping out during team calls, I hear them well all the time. I put one of satellites next to my laptop and using cable connection it works well. Any idea what might be going wrong with wifi connection? Or at least how to test it without waiting for people to complain they cannot hear me? This problem started 3 weeks ago and was working perfectly during previous year. Thank you