We primarily use USPS and UPS to deliver our packages and do everything we can to get packages out to our amazing customers with as little issues as possible, but once items leave our facility we no longer have any control.
Sometimes an accidental scan by USPS/UPS can cause your package to show up a couple days late. We recommend checking your mailbox, with neighbors, or any other locations around the premises.  We’ve found that waiting a couple days usually solves the issue.
We also recommend reaching out to your local post office/UPS to see if you can get an answer and, if necessary, filing a claim with USPS/UPS. Here is the link that you can file a claim with USPS/ file a claim with UPS.