Inconsistent camera

Hi. I’m struggling with my doorbell camera since installation a month or so ago…
Sometimes is records every motion and other times nothing at all.
Even when it picks up motion I don’t get a notification on my phone for ages. The other night I was out cleaning the car. After about half an hour of being back in I opened the app to see numerous detections. Once I closed the app I got notifications coming through for the next 10 minutes!
Any help gratefully received.
Thanks

I’m having the same issue, delayed notifications. And several times the doorbell has reported a ring but there is nobody on the camera recording.