Anonymous
Don't send anything until you get confirmed payment via ebay & paypal.
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1. Sign into Paypal. Is anything there? If yes, upgrade to take credit or accept or whatever. Note if Paypal shows the money is pending, do nothing. Your buyer paid with a transfer from their bank account and Paypal wants to make sure they get the money. This transfer can take a week.
2. If not in Paypal, check auction to see what email address you used. You may have to pretend to sell again, just don't list. I made a typo once. Sinve I couldn't create a valid email for the typo, buyers had to cancel payment. Otherwise at 30 days of not being claimed, it will refund.