Inconsistent Motion Detection with Peephole Camera

I received this item about a week ago and have been struggling with it ever since. The camera faces my front yard which is adjacent to the street. Last night I got multiple alerts which appear to be just small bugs flying in front of the camera (there's a porch light on the same wall as the door). Today it appeared to pick up someone walking on the street (whose image is quite small in the field of view) and also a car driving by, but not all cars. I can frequently walk right in front of the camera and stare at it and not get an alert, although occasionally I do.I've tried various settings such as Sensitivity, Smart Alerts and setting Region of Interest. Signal Strength is shown in green meaning the WiFi signal is strong enough.I've checked out various threads and internet posts and appear to have tried everything others have done but cannot get consistent results - it will pick up a little bug or someone walking many yards away but not me just walking right up to the door. I talked with tech support yesterday and they just told me they will make note of my issues and suggested I call back in a few days if nothing changes.Anyone have some magic solution? Could there just be a hardware issue with the camera? The rep mentioned something about a firmware update. It appeared to do this when I installed the camera. If there are later updates are they done automatically or is it something I have to initiate?