Thank you for this. I will try it again in the order you suggest. Trouble is that even though I get it to work I have to do the same thing everyone I want to use the speakers! Here’s hoping they fix it sooner rather than later. All works perfectly on my wife’s Samsung!

Hi Ken, I have no idea to be honest.  This is why I think it may play up again.  I tried the sonos support suggestions, several times, and couldn’t get connection.  Whilst trying the suggestions Ive never seen the SONOS App listed in the Privacy > Local Network settings.   Its there in Privacy > Bluetooth.  Getting things working seemed to be a combination of disabling Private IP in WiFi Network on iPad, and turning router and sonos devices on and off in the order i described.  It may have been a coincidence, and it may play up again.  But, even though its working fine now, SONOS still isnt listed in Privacy > Local Network settings.

Have you tried uninstalling/reinstalling the S1 App and setting it up again to control the ‘existing’ system? It should prompt you to allow access to the local network… I’ve just reset mine, as a test and this is what I see during first launch:

Hi Ken, Ive probably confused things by posting to this thread about S1.  I’m now running S2. I was having trouble with S1 on all my devices, ipad, iphone, and I tried everything suggested.  Not sure what happened.  But once I found Connect(Gen2) could run S2, I upgraded Connect and Play:1.  And the old ipad and iphones we have are now fine.  Its just the newer ipadOS 14 ipad i was still having trouble with.  Apologies for posting about S2 to this S1 thread.  But I guess the ipadOS 14 Privacy feature is common to both.  And I never see the prompt you describe when installing S2 on the ipad (I’ve installed a few times now).  And SONOS still isn’t listed in Privacy > Local Network, even though it seems to be working fine now.

That’s okay - the S2 App prompts here in the exact same way as S1(as per screenshot in my last post), but only when it’s fully uninstalled/reinstalled. Note it will not prompt for network access if the App is simply reset.
 

If it doesn’t do that, then I suspect there might be an issue with the iPad. Perhaps try uninstalling and rebooting the iPad before reinstalling the S2 Sonos App from the App Store. Oh and don’t forget to connect to the ‘existing’ system.

Update. One week later. Sorry to say my previous attempts to solve this, one worked temporarily and lasted a few days. This morning the status is iPad running iOS 12 no longer connects, iPad running iPadOS 14 no longer connects, iPhone running iOS 12 connected briefly this morning,  now no longer connects. Thanks for all the suggestion Ken and everyone else in community. I’ll continue to try suggestions. My last post on this topic. The level of support from SONOS has been atrocious. Spending so long trying to fix software faults like this is something I’d expect when I try to do things on the cheap. A SONOS isn’t cheap. If I had the money it would be out the door. Unfortunately I’m stuck with it.

If your router broadcasts both 2,4 GHz and 5 GHz try disabling 5 GHz as an experiment and see if that changes anything.

You are in the UK: are you aware that the recent update to the BT Smart Hub 2 broke Sonos compatibility? They messed up connectivity between 2.4 and 5GHz devices, which is a critical feature for Sonos. The recommendation is to use a decent router, or to disable 5GHz until BT learn how to write router firmware.

Also: I i grew up in Farnham. Well before there was the internet, or BT for that matter.