problem adding contacts to favorites
I have iOS 18.2.1 and can't add someone to "favorites." I follow the same procedure for others and for some people it works, for a handful it doesn't. The number I'm trying to add is correct and I call/text that person all the time. I've removed the contact, turned iCloud sync off/on, added him back in, rebooted again, sent the contact to myself and created a new one, etc. etc. -- all the fixes I could find online. I still can't add this person (plus at least one other) to favorites. I did the same thing for someone else and that person was added with no trouble at all. Any advice?