Doorbell camera detects motion far and near but not in between, like when every package is delivered

My wife wants us to cancel service since our doorbell camera notifies us of large trucks and buses passing in the street but does not notify us when someone walks straight up our walkway and drops a package on our front steps.

When we open the door to retrieve a package we get a notification.  But motion directly at the camera goes undetected.

I have been using SimpliSafe at this house for 2 1/2 years and at my previous residence since 2016.