In answer to your question about not being able to update, Listia blocks updating when you get to the 24 hours left point in an auction. You can comment up to the end.
I placed the 32nd bid, but I was not the 32nd person. It's awfully hard to record who the 32nd person would be, but easier to know who placed the 32d bid. I know this from experience. You stated earlier "The next prize goes to the 22nd bidder" so I have to ask, which way are you using?