I also think that the exchange administration cannot somehow interfere with trade.
Exchanges earn on listing and conducting IEO. The exchange administration does not need to interfere in bidding. In addition, it will be a blow to the reputation. I do not think that this has happened. Most likely, the user spoiled something or did something wrong.
I do not think that such a stock exchange with a rating will change anything in the auction, its even somehow not right, why spoil your reputation in the market