Before mounting your Video Doorbell to its mounting bracket, ensure that the security screws are unscrewed about 6mm. Align the hooks on the bracket with the unit.
Once the doorbell is aligned, push the doorbell in toward the wall and then apply pressure downwards. It may require more force than you expect and several attempts for correct installation. Finally, tighten the two security screws on the bottom of the device using the screwdriver included.
Consult the video below for additional assistance when attaching your Video Doorbell to its mounting bracket: