Hey @DM1919. Thank you for your feedback here. I’m happy to ensure we pass this along to the appropriate teams, and I apologize that you still have not been able to find a resolution for this concern. It’s possible this may not be iOS related, as there could be a setting that is prohibiting this kind of tone from playing on your phone. One possible fix is to find or trigger a Ring notification into your Notification Center, drag it to the left, and hit “Manage” and take a screenshot of your options. If it says “Deliver Prominently," click it. If it says “Deliver Quietly," don’t click it.
Once you have this screenshot, please attach it in your reply, and then try to trigger another Ring notification and let me know if you get the motion alert tone still.