I deleted the previous auction and uploaded it again, it's already 3 times that the same person makes fake bids. I blocked it several times and nothing. I don't know if this will help, but if you see the same person bidding on other people's posts, let them know they're sending fake bids! Their nickname is NovaMelyor.

what was the final bid of the last auction?

In the last auction their highest bid was 50 dollars, I feel that it was on purpose because someone had told me to buy the character for that same price minutes before this person gave the bid. It usually gives high bids, and then disappears.