Thought i would post this, as there doesn't seem to be a fix.
Completely random situation. Add 2 or 3 music to the queue and then try to add another and it says 'Unable to add to queue'. Clear the queue and add 1 song and it plays and i can view the empty queue. Try to add another song and you get 'Unable to add to queue' What !!!
Clear the queue follow all the the info from my last post. Restart router, etc. Then add songs to queue, i can view, edit, etc. Clear the queue do the same thing and try to view again 'Unable to view queue. Try again later'. Clear the queue and add 1 song, all good, view queue o.k. try to add song and 'Unable to add to queue '.
Tried multiple times, over a few days, weeks, etc. Same thing, random all the time. Sonos tech go through the same thing, restart router, etc. Just the same. Getting fed up, as there doesn't seem to be a fix. Loads of app updates but still not fixing.
Just an update to this. If I use Plex app for music, no issues, I can add, remove, update the queue no issues every time. It's just the Sonos app. Trying to stay faithful but I am using Plex more for music at the moment.
Moderator edit: Combined posts