I have had 4 Sonos speakers for three years - two Play 5 in my living room and two Play 1 in the office. For the first two years they worked beautifully. Over the past 6 months or so, I have had chronic conection problems. Almost every time I use either set or both, one speaker or sometimes a whole room disappears from the app and won’t play. I have repeatedly gone through the reconnection protocols, rebooting and “adding a product” and “finding a missing product”. But these problems persist. I have not changed anything in the system - not my router or my computer, or any other devices except for adding an echo recently , which rarely works with Sonos either. What happened? This is really frustrating. I usually end up having to connect a speaker directly, which is a huge pain. And then it will sometimes restore the speaker, but only until the next time.