1. I was traveling with an older Android phone (Android 4.4.4). I couldn't install the latest version of the app. I tried installing an older version, but it simply said I needed to upgrade. So, I couldn't play any music from the phone. I checked online and a number of people were complaining they used their older phones and tablets in the house as simply a Sonos remote, and they now had to upgrade all of those devices after support was dropped.
2. I installed the Windows app on my laptop to play music. This worked, but then I noticed the subwoofer wasn't plugged in (likely so people didn't annoy the neighbors). I thought I would briefly test it out to get an idea if Sonos would be a good future purchase for myself. Well, I plugged it in and I needed to do a setup process from the app. Well, apparently that can't be done from the Windows app, and I couldn't install the app on my phone, so the subwoofer just sat there as decoration.
3. My partner came home and she had a newer phone, so I had her install the Sonos app so we could setup the subwoofer. She installed it, I went to the app to configure the subwoofer, and it said it couldn't be done unless I updated the speakers to a newer software version. Well, this wasn't my apartment and the owner lived there when it wasn't rented, so I figured it wasn't my place to update their speakers.
In the end, I never got a chance to test out that subwoofer, and I lost interest in Sonos because I felt like for the investment, the rug could be pulled out from under me at any time. I hooked up some of my 15 year "dumb" Klipsch speakers in my new apartment instead. Didn't need a new mobile phone to set them up, didn't need software updates, just plugged them into the wall. It sure felt easy. I can't help but feel like we lost our way a bit in recent years.