hi everyone) the first time I encountered a problem is that after the auction ends, the winner has not answered me for 2 days (what should I do?

Hi I don’t sell characters or anything but I commission a lot of artists, and usually I see them put the character back on auction, and add a note at the top of the description. Something like- Put back up to auction due to lack of response! Sorry if this advice is not what your looking for ^^