Erroneous motion notifications on Android app

Hello. For the past 2 weeks I've been getting notifications on the android app every time a car goes down the street. I have a motion zone set up which excludes the street and the door bell history does not show these events (it does record events when someone approaches the door etc.). It has been working fine for 5 or 6 months. I've even reset it and set it up again from scratch. Reinstalled the app etc.It's as if the doorbell is seeing the car and sending a notification and then deciding it wasn't a valid event instead of validating before sending the alert.Can anyone suggest a resolution short of turning off notifications (which defeats the object of having the doorbell.Also, just after one of these phantom notifications, Live View won't connect but works fine at other times.