I am also having the exact same issue. The only thing that changed was the my girlfriend and I had just switched over to Iphone 12’s. We use the camera’s to monitor our kids and everything was working flawlessly when i was on my iphone XS Max and she was her iphone 11. All of a sudden they don’t work on the new phones, but my ipad pro 3rd Gen still gets notified of motion. Is there still no fix to this?