So many issues and I don't know where to start . Notification doesn't work and when is work trying to communicate with the person in front of the house more stressful than talking to challenging child . I cannot change the doorbell sound . Something has changed since Xmas and when doorbel rang very long sound and one bell . Trying to communicate with customer service to get help .. oh dear ,very incompetent stuff who doesn't know anything about the nest doorbell.Google needs to improve.Big time!