Why does it let you lower your offer? e.g. 1st offer is $300, and my 2nd offer is $200. Yet at each stage, the website lowers its price. The algorithm shouldn'

Why does it let you lower your offer? e.g. 1st offer is $300, and my 2nd offer is $200. Yet at each stage, the website lowers its price. The algorithm shouldn't be dropping the price and the bidding process shouldn't let you drop your offers.