I have three devices listed in the hub currently.
Front Door Lock (works great).
My phone (Samsung Galaxy S20, that I'm working on presence rules for)
Onkyo Stereo, which I have not been able to get working yet.
I've got two rooms setup, Entry Way, where the lock is and Family room where the Onkyo is.
Browsing the app on my phone , I can see only one device, The Onkyo.
However it shows both rooms.