We added a new Sonos One SL to our system today and had to upgrade from S1 to S2. Now we experience that the old Sonos Play:1 will not play next song in list. It just stops after the song is finished. Have no idea what to do to make it work. There is no network problem at all.
Maybe try a different non-overlapping 2.4Ghz WiFi channel to begin with (using either channel 1, 6 or 11) and perhaps see if that quick WiFi channel-change will resolve your issue.
If it’s a streaming service you’re playing from, also try reauthorising it in the App or removing and resinstalling the service completely.
I’m not quite sure I understand how you determined there isn’t a network issue, this sure seems like some sort of disconnect between your speaker and your router.
In addition to
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