Delivered but not received (carrier misdelivery): check the delivery area (mailbox, porch, neighbors); contact the carrier with the tracking number, since they're best placed to investigate; and let us know so we can work with the carrier from our end.
Lost in transit: packages sometimes stall temporarily, so wait 2–3 extra business days first. If tracking still hasn't moved, contact support with your order number. We'll investigate with the carrier and, if the package can't be located, arrange a replacement shipment or credit your account.