All indications of local network issues. Try a network refresh of your Sonos system, by unplugging all your Sonos devices, then rebooting your router. Give the router a couple of minutes to come up before reconnecting your Sonos. 

Or, go in to your router’s administration area and assign reserved IP addresses for all your Sonos, which provides protection against a recurrence of this issue. 

Unlike users who are complaining about the new app, and I do feel sorry for you all, I have no problems using the app. It is responsive and I have grouped speakers playing all day long. I am waiting, just like users did when the original S2 app was first introduced, for Sonos top work out the bugs.

This worked for me, I unplugged all of my Sonos gear (it is all first generation stuff). And I unplugged my router, After a few hours, I plugged it all in and the new app found all of my gear and playlists, streaming services and history.

The only remaining issue I have is that I cannot connect to my digital library

Since the new app updated, I have a multitude of issues. Music lags, volume adjustment lags, adding speakers or zones lag. Music cuts out continually. Is thus because I have several older units? (play:3 and play:1) have done a system reboot. Unplugged all Sonos products (18 in all) shut down router and internet connection for 10 minutes. Restarted internet and router. Waited another 10 minutes and plugged in all Sonos products. It fixed nothing. I’m trying to roll back to the old app (s1) and it looks like I have to down grade every speaker?  Which means factory resetting each one and setting up the entire system from scratch.  I’m more than frustrated that I spent so much money building my system and now it is unusable. I have no need for some of the newer features… I just want to open the app, choose music and choose rooms to play it in. 

Great troubleshooting efforts, for sure. At this point, since Sonos doesn’t offer the option to roll back, I’d suggest that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

Thanks. I did talk to them once. Spent over an hour on hold. They told me to do what I did.  When I called back and edited another hour and a half, as soon as they got on the line, it got cut off. I’m at the end of my rope. Every time I call, there’s at least a 75 minute wait. 

Unfortunately, I am experiencing issues with the app refresh when I open it. For example, if I go a day without opening the Sonos app (new version 80.03.06), the "Recently Played" and "Your Services" sections take forever to respond. I have to force close the app and reopen it, at which point it instantly responds. My network is perfect (I use a range of Unifi equipment and it is spot on). I even reset and reconnected all the Sonos equipment to WiFi, ensuring they are on a dedicated 2.4GHz network. Still, the same issue persists. This problem did not occur with the previous generation app.

Additionally, I am encountering another glitch. For instance, I have a favorite Sonos radio station, “80s 80s MV”. If I try to open it from "Recently Played", it generates an error saying “Something went wrong. Try again.” No matter how many times I try to open it from "Recently Played", it fails with the same error. However, if I open the same radio station from “Sonos Favorites”, it opens without any issues. I am attaching a couple of items to illustrate exactly what I am experiencing.