I FINALLY FIXED THE NEW APP! MY SYSTEM IS WORKUNG AMAZING AGAIN! Ok there was the click bait, here is the solution... just GET RID OFF THE NEW VERSION! Go back to 16.1 (the old version!) A lil google dive on the topic and I found this! A bit tricky with all the ad bs on apkmirror :( (so be carefull and actually download the real file not some advertising junk) but seriously I downloaded (search SONOS in apkmirror - hopefully will be a live link in my copy and paste to get you to the apk site), turned off auto update in the play store (for just SONOS) and logged in, it was all there and instantly! My playlists, my staions, my favorites, ALL my speakers and the correct network! Again this is copy and paste from a post I fpund on Reddit so please give credit there! Enjoy!
From a fellow Sonos forum user, use the steps below. It worked for me and I am back to the previous version. This is for Android users. First remember to uninstall the existing Sonos app from your phone. To avoid confusion, arm64-v8a is for devices with 64-bit processor, and armeabi-v7a is for devices with a 32-bit processor.
“Went to apkmirror.com on my phone browser, and downloaded Sonos 16.1 (arm64 v8a). Then opened the download folder and ran the install. (You may have to select the permissions on your phone to allow you to do that). Following install I turned off wi-fi and mobile data, then went to play store and selected do not automatically update apps. Then turned wi-fi and mobile data back on, then ran the app and signed in.”
UPDATE: You can keep auto updates for all apps except Sonos. Enable auto updates in the settings of the Play Store. Then search for Sonos app inside the Play Store, tap on the three dots in the top right corner, and uncheck the box for "Enable auto updates". Now just the Sonos app won't update automatically. If in the future you'll see multiple app updates available in the Play Store for the apps on your phone, remember to update them individually, and do not tap "Update All". If you update all, that will include the Sonos app, even if you disabled auto app updates for the Sonos app only. Also, remember to disable system updates (for Sonos products in your system). Go to Settings in the Sonos app, then System, System Updates, and turn off "Update Automatically".
