Nest doorbell Camera always seems to go offline at the most inopportune times. Like when a person comes to my door when I am gone. App shows all the activity at door before and after event but only a blank screen when somebody actually comes to door. Happens often. Very frustrating. I finally ended up purchasing Nest's pay service to see if that would help my camera keep from going offline, but to no avail! All my other devices never go offline in the house. Help customer service!