i do not see that expliciltly written somewhere. In their resolution center they do allow you to upload files and the proof of signature by usps was uploaded. In response i received the following message Unfortunately, we cannot grant your claim appeal because we were unable to track your shipment because you didn't supply the requested proof of shipment within the allotted time. The documents you have provided us with do not show the destination address in the USA, as we need to confirm the item was sent and delivered to the same address as under the transaction details. If you have additional tracking information, or have any further questions, reply to this email or send a message to "(paypal email complaint address)" I will not comment the "alloted time" because it is a joke. I responded within hours in all mails . The usps proof of signature contained all the info 1)name 2)signature 3) address The mail i received above implies three things 1) that they do receive other documents apart from online proof or 2)they do not bother reading the documents or 3)they give me the run around as a tactic to get me frustrated or exhausted untill i give up claiming my rigths as a seller
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