Door Bell motion sensor goes off CONSTANTLY

Hello.    I live on a busy street, and the traffic would trip my doorbell sensor all the time, so I tried to  the app to try to minimize the motion sensor from tripping.  I set the settings on PEOPLE ONLY, then I set the sensitivity to LOW, and I even blocked off almost the ENTIRE FIELD OF VIEW , definitely including the blocks where cars are driving across.  Yet I still get MANY motion sensor detections throughout the day.   Obviously the App motion sensor setting do not work very well.    Is there any fix for this?