On May 31, 2024, I placed 2 oil sell orders on the ACM exchange; the volume was 0.2 and 0.3 at the corresponding prices of 78.11 and 78.15. The stoploss was set at 78.40. At this time, my account had about 800 USD. If the SL was reached, I would lose about 35-40 USD for each order. However, after about 10 minutes, I went back to my account to check and saw that these 2 orders had been pushed up to the price of 79.78 and the account was negative by nearly 800 USD. But in fact, the oil price on the market at that time was only at 78.28 and had not reached SL. After that, the oil price dropped sharply. I do not know how the ACM exchange adjusted so that my 2 orders jumped to such a high price while the market price was going down. Because of this adjustment of ACM exchange, my 2 orders that should have been profitable turned negative and led to my account being burned immediately. I sent an email to the exchange to request a solution but did not receive a response. Knowing that the possibility of recovering money is very low, I still hope to receive support and warn investors to stay away from the ACM exchange.