The name of your theatre would have been something like BS Theatre – 00serial no00 >
As you can say, you can change/rename. However, i have not notice this before on my Unit
What I have noticed that if you rename the TV list or Radio List in the remote setting too often, it will reset to say HDMI A and cant be changed. Only a Hard Factory Reset can then change it.
I suspect its something about the BeoApp and the Theatre 2-way control which hangs up. I have raised these points with Beocare…..and maybe one day they get around to fixing it?