My Ring App stopped making a sound when I get notifications, such as neighbor alerts. I still get a sound “someone is at your front door” if the doorbell is rung. But the other type notifications just come up on my lock screen, but no sound. It is an iPhone 6, latest version of iOS for that phone. All other sounds in other apps are working fine. I think the app updated very recently, so maybe it is a bug that needs to be fixed.
Have you tried uninstalling and reinstalling the Ring app?
I have a similar issue on Android. Only got the doorbell yesterday and ever since I stealing I get the notification on screen, it vibrates, but no sound at all. Even tried changing the notification sounds but still nothing.
I have this and its intermittent. Sometimes I get the audible alert, but most times I just get the notification on the screen.
I have uninstalled and re-installed both the Ring App and the Ring Rapid App