I bought some HT, and then filled an order on huobi, and found that my trade fee still came out of my purchase, rather than my HT. Is there a setting I need to change for HT to be used for fees? Or do HT not work for fees like BNB? On binance, it is set automatically, with the option to deselect. I have consistently had difficulty accessing huobi.pro website, and have had much difficulty finding info when I can actually log in. Any insights? Thanks!