On September 22, 2021, GBP/NZD price increased to 1.94949 and 1.94275, withe the stop surplus at 1.95036. It rose 664 and 5841 at 5:58 September 23. After a week, my orders suffered losses due to the severe slippage which was changed by the platform. The exchange rate should be 1.9446 and I contacted the platform. I thought I should make profits at 11:00 when I did not close the order. Although the delivery failed, the losses it caused was terrible. After 1 week, they wanted to change the history. I never met this situation in my transactions of 20 years with several accounts.