What is point of the new app?

It has stopped my system working and does not support features available for years!

It does not work with Sonos Boost.

You cannot set alarms.

It cannot use the network drive that was previously set up in the previous app or add it in now.

You cannot go back to previous version of app that had all the features.

To get system working I have had to use a speaker to replace the Boost - rather than act as a speaker which it was purchased for.

The missing features in the app make the system unusable.

No return method to the working previous app version is unacceptable

The work around to use a pc to get around the deficient app is appalling.