I sold a set of collectible toys.. the auction ended on Sunday. It was specified in my auction that payment was due within 3 days. I have sent an invoice so far and an additional message yesterday, asking for a response back. I am VERY nervous because the bidder has private feedback- why, I have NO idea. This person bid last minute and shot the price of my auction way up. There were several other people competing for my items. Now I don't know what to do. Is there a way for me to contact this person besides sending them messages? Should I just offer the next highest bidder a 2nd chance offer? I don't understand why they have that private feedback- it says positive 4 but I can't read them. What would you do? I'm really upset- this was a high ticket item I sold. :/ I already set up something to stop bidders with bad feedback from bidding.. is there a way to prevent bidders with hidden feedback in the future?