I have had sonos since the day it was released and upgraded periodically 

I have now upgraded my system and app and it is a nightmare 

now I can't get my favorite music 

but 

the biggest problem is

  organizing groups 

if I start the music in the whole house on my device I can no linger design my own group without closing the house 

    it's  very difficult to get grouping done

    the sound control has a huge delay 

I increase volume and nothing happens, I increase it again and I'm blasted out of the room 

so many problems 

it takes hours to set the house back up in the app by resetting g all speakers 

Please please give us back the old app