Google Nest Community

So the doorbell is not capturing any pictures of faces for you?

Go to Familiar Face then tap "manage". You can then name the faces that the camera has captured. This will help stop the misidentifications.

If you move far enough away from the Wi-Fi router, it should change it to 2.4 GHz which should help connect the smart plug. The closer you are to the router the better chance of getting 5 GHz which is not helping you.

Unfortunately, it looks like you cannot show notifications for only unfamiliar faces.

Open the Nest app. Tap settings. Select "Familiar Faces". Turn face section on or off.