Hi, I need help with a problem I am having with Paypal. I got a fake Reggie Jackson rookie card last month from an ebay seller . I filed a dispute and Paypal said I would get a refund If I sent the card back. I would also have to get a tracking number and sent it to paypal. I sent the card back and I have the tracking number. I am trying to send the tracking number to paypal but, it keeps saying Tracking Number Invalid Format. I typed in the tracking number and selected USPS as my shipping company but it say that I have to fill out if other, please specify. What do I type for if other, please specify?