Image of person on snapshot but no video of event

My product is the video doorbell pro:

I have somewhat of a similar issue… There has been an incident involving a group of people scoping cars to break into and according to my neighbour someone tried to climb onto our roof, BUT there is CRUCIAL footage that wasn’t motion recorded and only a snapshot capture.

ANY car that drives past my house is recorded, person to pet, it picks it all up. That I am aware of, I have never had an issue. But why this instance it’s only a snapshot and not a motion recording… There was quite a bit of motion to capture as well, including a car and four people, and one walking into my front yard…

This is alarming for one, and it makes me furious that I had got this product for this exact reason.

Please shed some light.