Another app issue! Recently, when I open the app on any device it takes between 3 to 5 minutes before playing music is possible. All my devices show empty queues, then after a few minutes they refresh and show what was last being played, only then can I select music to play.
Is this a known app issue?
I’d suggest the next time it happens you quickly submit a diagnostic, wait until it clears and submit another. Then contact Sonos support with both diagnostic numbers (don’t post them here) and get them to look into your issue.
This sounds like a local network issue, with the system not always connecting to the controller ‘instantly’. While there is some minor delay, I’d suggest it isn’t supposed to be that much of a delay.
Beyond the good advice given by
Looks like it’s resolved. It was network interference. Changed the 2.5Ghz and 5Ghz WiFi channels and the app connects immediately. 
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