Hi ​@Stefano1969 

Welcome to the Sonos Community!

One of (probably the biggest) reasons why the new app had so many issues is that is was written from the ground-up - no code from the previous app was copied over. This unfortunately meant that some issues long-resolved resurfaced, and new issues appeared.

There has been a certain amount of prioritisation going on - the issues affecting the most customers have been addressed first. Once these are resolved, issues affecting smaller numbers of people will be investigated, such as those you listed.

Progress is being made, however, and the new app is now more successful at many tasks than the old app ever was (we get metrics on how often certain tasks fail). It will continue to improve. Thank you for your patience, and your confidence in us - you are not crazy!

I hope this helps.

I totally agree with ​@Stefano1969 The issue  with the slow responsive app has been there almost one year aleady. As the only sound system in our house, it is super frustrating to have to wait one minute just to turn down the volume when e.g. the phone rings. Based on your answer above, it seems that you have launched a beta version of the new app for everyone to wrangle with. 
The hardware is really expensive (and the sound is super), but the software is not living up to this. 

Agree totally. Please focus on performance, responsiveness and stability. We do not want fancy features when the basics are not in place yet. 

"issues affecting smaller numbers of people" ​​​​​​?! I call Bull. There's no way only a small percentage of users are having this issue. We're all using the same version of the software. We were all complaining about features that were gone, yes, but is this really the tradeoff?! Come on.