Why are you selling the program though? If it's not functioning as you expect it to function then you complain to the seller, you don't offer it to more people.
I'm not. I made a thread on a different forum advertising it and I couldn't sell to anyone who was interested in buying because he didn't even add useful protection to the program so I had to message other devs so that I can pay them to make the software actually good and that would cost me loads. I didn't sell a single copy because I can't. Also when I asked him for a refund he said no and I'm not going to sit here and not even try to make my money some how; It's what anyone would do. I never sold it though what so ever. Not to a single soul.