I have Sky Q for my television system. They Sky Q boxes act as WAPs. I have my Sky router, the main Q box plus 4 mini boxes. In essence this means that I have six WiFi access points in the house. The system is designed to be wireless but, because I've had a few issues some of the boxes are hardwired and some are powerlined/dLAN.
My Sonos system has one unit hard wired and the rest are wireless.
I am finding that it is increasingly likely that, when I open the Sonos app on my Android phone then it won't find the system, particularly if I am away from the router. At other times the app will show that I have one song queued up for the room I am listening too but, in fact, it is playing a different song.
Interestingly, even when the app is struggling in a particular room, normally an Alexa enabled device still seems to work.
I have submitted a diagnostic from my android app 367174048 and also from my hardwired PC 1275759508.
Hopefully someone will have an idea!