Doorbell will not video people as they walk to the door

I have had this issue for a while. I can walk to the door put something in the mailbox next to the door and it will not capture that I was even there. I have reset the system, checked wifi, went through setting to make sure it was set up correctly, and went through this forum form others questions to get help . I don't know what else to do. The doorbell is useless if it doesn't tell me who is at my door. I had a neighbor ring the doorbell the other day and when I looked to see who was there it showed no one???? She was standing right in front of the door.