upgraded to iPhone 15 pro max - now reminders don't synch with apple watch
Earlier today I replaced my iPhone 12 Pro Max with an iPhone 15 pro max. Everything about this seemed to go smoothly…. except that reminders now won’t sync to (or from) the watch. Reminders still sync to my iPad and my Mac. Also, everything else that should sync to the watch has done so (e.g. contacts).
The watch is an Ultra (last year’s version), and both devices are updated to the most recent Vera of the OS.
I’m baffled. How do I fix this?