This happened to me at least once, the buyer paid and never accepted the push in his account, I could not tell if he just didn't know what to do (a noob) or never got the emails from GD telling him he had a name coming into his acct, or what. I took the initiative (to cover my ass like Jack G said lol) and even emailed GD to get someone who spoke Chinese in case that was the problem, they said Spanish is the only other language they're allowed to conduct business in. I did email him thru the link GD places next to the name he won, he responded but I don't think he understood (did he ever hear of Google Translator....? I suggested it by name), we went back and forth...
YoDaddy paid me, amazingly, but that was a couple of yrs ago while sellers were supposed to push to buyers, now it's all automated so if that had happened to me just recently the guy would've received the domain in his acct, want it or not. GD never gave me any straight answers as to what I was to do in that case. They claimed he had already paid for the domain but didn't specify if I could just let it drop at renewal time, or if it was mine to keep (I did my job and the other guy didn't take it, so...?) which would not be unethical at all in this case, or was I supposed to keep renewing the thing until the buyer felt like accepting it...? I felt that letting it drop would've been a waste for me as the seller, and even if GD had told me in plain English I was under no obligation to renew it I decided to do that, at least for one time. So I renewed it and even kept it listed for sale right on GD. I figured if another person came along and offered me $ for it I'd clear this with GD before, since according to them I had already "sold" the name once. I don't think the buyer maintains any claims to the name after the seller went out of his way to close the deal and the other party didn't accept. I kept an email trail and my notes in case GD felt like banning me one day, so (David) if you did all you could and not even the marketplace/registrar that was involved could get the buyer to accept then that's it imo...you do what you think it's best
The 2nd renewal is coming for that name and I don't know if I'll do it since I've gotten no other offers for the name. I'm glad I read David's thread, tough and weird situation to be in for sellers and there's no clear-cut answer as to what to do. Dropping it would be understandable and GD can't penalize you if the buyer resurrects later and demands the name. But selling it is a better option imo, that way if it gets sold then that original buyer needs to be told to go get the name from its new owner since he refused to take it earlier. I'd have no qualms about doing that at all. Others will tell you to keep renewing (and not sell cuz it isn't yours anymore) until the buyer reappears, that's bullshit and don't feel bad about selling it. Just one thing (David), selling it on GD if that's where it all happened (was this a private PP deal ? I can't tell....) would be best, and don't list it anywhere else. That way GD can see all you did was all transparent. You can always reimburse the original buyer even yrs from now if he comes back, GD is cool with that, I know from experience so there you have an exit...
And if he demands the domain and you still happen to have it, then make him pay for every expense you had to incur due to his negligence, and only then can he have the domain