How to look up the USPS tracking number on a FedEx Ground Economy Label
I think I dropped my Fed Ex Ground Economy shipment at the USPS post office and Ebay default tracking is FedEX. I was told by the Postal worker that they will take the FedEX package but scan the USPS tracking number on the dual tracking label. On ebay I can't look up the a image of the original tracking label with both tracking numbers. The buyer is saying that they haven't received the package. It would be nice if I could look up the USPS tracking number associated with the FeEX ground Economy Label. But can't do it on Ebay. If I could. I would at least see if the package was received by USPS and be able to see the tracking details. Now I am stuck having to believe the buyer's claim he hasn't received it. Can anyone help me looking up the USPS tracking number associated with the FedEX Ground Economy package label?
Thank you.