Camera did not capture someone

Our camera of only 2 days has been working just fine with all of our activity going out front door, coming up driveway, etc. At some point this morning, while we were sleeping, someone left a package on our front porch. The camera did not detect this motion and film it. Any ideas as to the problem?

Theres a few things that could have happened here, such as the the package that was delivered was not in a current motion zone, perhaps there was a brief outage with your ISP / down time with the connection. I would check to ensure all areas are covered!