The new app for iOS is an absolute train wreck, absolutely awful. It will ruin your Sonos experience, and support acknowledges that there are issues and their support lines are flooded with angry users. In spite of that, they keep pushing and prompting people to download it. DO NOT FALL FOR THIS, DO NOT UNDER ANY CIRCUMSTANCES UPDATE THIS APP. If I didn’t happen to have another device that still has the older app, I wouldn’t be able to operate my system.
Support says “be patient, the engineers are working to fix the issues and missing features”, my response was to suggest that they IMMEDIATELY re-post the prior version of the app, roll this disaster back until they can produce a fully-working app.