After checking the closing time and the historical offer of the order, there is no problem to confirm the closing price of customer's order. The platform's forced liquidation rule is implemented first with the order with the largest loss. Customers can refer to the forced liquidation data shown in the account history of the MT4 trading platform. Please notice that only the Bid price is displayed in the MT4 chart, so the closing price is the price in the chart plus the spread at the time.

I’ve searched all the price and they closed my positions with 0.4 slippage. I suspect that they modified the data.