The auction is totally flawed, you made several mistakes.
Trade Rules for auctions broken:
"2. All bids must be acknowledged, and all current/best offers must be publicly announced with the bidder's username and bid amount.
This applies to every in-game bid received, and must be acknowledged in the auction thread with a screenshot. Timestamps are preferred."
"8. End point must be clearly stated before the auction has started. This cannot be changed once the auction has begun." (not clear because you never posted any bid)
"11. Insta Prices, Minimum Raises and Accepted Payments are optional, however, if set, must be announced in public, and cannot be changed, negotiated or added once:
- In-game: The auction has been announced.
- Forum: The auction has started." (changed min. bid from 200k to 100k)