@Getafix Sorry for not getting back to you! I had asked you to post the pictures in case it looked to be a positioning concern where you could readjust the position of the doorbell for improved performance. As this is a neighbor to neighbor forum, I was hoping another neighbor may chime in and help.
Please note that occasionally when in People Only Mode, light reflection, as from an outside window or passing car, can activate motion detection. If you’re getting a lot of unwanted notifications look for reflective surfaces that may be shining light onto your device, or reposition the angle of your device. Alternatively, you can turn off the People Only Mode setting. I recommend to try turning off People Only Mode after readjusting your doorbell’s sensitivity to be even lower, in hopes that it helps eliminate some of this concern.