Reminders driving me crazy!
When I add a reminder it syncs between Macbook and iPhone but when I update or mark as completed it doesn't update on either device.
So I set it on my iPhone and later in the day mark it as completed. Go and turn on my MacBook several days later and it pops up on screen and stays there.
Or if I set one on my iPhone and then it pops up on the MacBook as I am working I say remind me this afternoon. It changes on the MacBook but not on the iPhone.
Running latest OS on both and have tried anything I can find online.
iPhone 11