If you have not dropped the bag off and the label has not been scanned, contact Ship4Snow support and ask to cancel the unused label. Eligibility follows the store refund policy. Unused labels have no separate deadline beyond what that policy says.

Once the carrier accepts or scans the shipment, the label is used and can no longer be cancelled. Do not reprint an old barcode after you think a refund went through.

You can also reach support from the contact page.