I have one Sub, which I usually swap between my TV System (arc) and my music system (five)

Worked fine on the old app. Just add sub to respective room.

Iphone upgraded first to new app. Didn't work, "an error occurred, check network". Luckily,  my android still had the old version,  and I could swap from that other phone 

Last night,  also Android was upgraded,  and now same problem here. Already restartet and powered off everything,  including router.

I didn't register for any beta program,  so why is the new app behaving like a beta?