Hi @Dcruz, welcome to the Sonos Community!
Sorry to hear that you’re having issues using your Sonos system. Just to make sure, are you having issues connecting to your Sonos system, where the app shows a system not found error or similar, or can you see your system but have issues starting playback and controlling your speakers in the app?
If it’s the former, I’d reboot your router, Sonos speakers, and your iPhones by powering them of for one to two minutes, then powering them back on in that order. Once everything is back online, try and connect to your system again.
I’d also recommend checking out our system requirements article to make sure your network meets them. Please provide your network router name and model, as well as the name and model of any other networking equipment you may have if rebooting doesn’t help.
If it’s the later, what music service are you trying to use? The first step would be to reauthorize the music service that isn’t working by heading into the Sonos App then to Account → Content Services → Music Service you use → Primary Account → Reauthorize Account. If you don’t have the option to reauthorize, then removing the service and re-adding it works the same.
I hope this helps!
Ok Thanks Jamie - will try.
I would also add that my wife has an old phone with the old app still installed. This has no issues !!!