why when I make a conversion from btc to usdc, does it not take into account the trading fee discounts that I have activated?

and then why when I make a conversion at the moment when #BTC is at 105500, does the conversion happen with a btc at 104600??? this is false!!!! it was not at this price at all, neither before, nor during, nor after $BTC

how to contact @binance?!! #binance