Not sure if it would help matters, but maybe stay up one day when you think a delivery is coming, or setup a camera? I'm honestly curious if somebody is working at those hours. At the very least, you could then provide that to CP to say "look, nobody was here but they said delivery was attempted".
Are you up in the Arctic though? Do you have periods where it's bright at night? In such cases I could possibly see them working at 1am...but still odd.
Are you up in the Arctic though? Do you have periods where it's bright at night? In such cases I could possibly see them working at 1am...but still odd.