Proof of shipment is an online or physical documentation from a shipping company that includes the following:
The date the item was shipped.

The recipient's address, showing at least the city and state, or city and country, or zip/postal code (or international equivalent). The address information on your shipping receipt must match the address on the Transaction Details page.

Log in to your account and go to the Resolution Center, where you will be guided through the exact steps on providing the proof of shipment or proof of delivery.