eBay

My payment went through but it's stated as pending for this one seller only, not other purchases... It states "waiting for seller to accept payment" or something like that... But I did get charged. I can't open a ticker or anything because they haven...

Is there a safe way to sell a digital code on ebay? What if I sent a letter in the mail with the code written on a piece of paper to prove that it was delivered to them? If I send the code digitally or maybe even physically, whats stopping them from ...