Ah sorry for the trouble here! If this is the case, if you feel comfortable reaching out to the recipient, have them check and see if the box was misplaced or left with a neighbor. Often times, the package is just around the corner!
If you are still unable to find the box after reaching out to the recipient. Please contact us at firstname.lastname@example.org and we will get you taken care of!
Related: lost, delivered, can't find, says that it was delivered, wasn't delivered, delivered but not received, didn't arrive, did not arrive