“Do Not Disturb” setting - no sound when starred contact rings

I use “Do Not Disturb” a lot especially overnight. I have “starred” a couple of contacts that I want to be able to reach me when this is set. I can see the calls coming in but the phone ringer is silent. I see mention in the “Do Not Disturb” settings “To make sure allowed calls make sound, check that device is set to ring”.
To be clear, the ringer is at full volume.
Maybe a dumb question but how do I get this to work, please?

I just testing and it seems to be working as expected for me (when in “do not disturb” a call from a “starred contact” will ring).

So you have System Settings > Modes > Do Not Disturb > People > Calls > Starred contacts selected? If so, when you click the gear next to Starred contacts in that DND setting, does it open your Contact list? If not maybe there is a permission not enabled for it to access your contacts.

I do not see a gear setting option once I get to Starred contacts option. That might be part of the problem. I “starred” my contacts through the Fossify Contacts app. Conicidentally, under the Starred contacts and under Contacts, both are showing as None… I think you are on to something but why I cannot see the gear is a mystery. I am IODE OS 6.6-20250803-brax3. Android v15

I believe that I have finally figured this out. The clue I guess was in “None” showing up under “Starred” and “Contacts”. When I dug deeper into the individual contact information, right at the very bottom of the info it says “Phone storage (not visible by other apps”. If you click on this, you get a bubble giving options to switch between DEVICE or remain on Phone storage (not visible by other apps). I switched to DEVICE and then the contacts started appearing under the various starred or contacts categories under DND.
I think this is now closed but I am wondering why all my contacts imported in as Phone storage (not visible by other apps). By definition, this is weird especially as clearly the Contacts are visible to e.g. Messages.
Anyway, if anyone reading this can explain the nuances of this last point, I’d be grateful as I don’t know if fixing one thing may inadvertently mess up another!!!