Price slippage and manipulation

On 8/10/2023, a price slippage occurred, which led to the account being weighted negatively at 22.5 GMT 10.5. And the market opening time on summer Sundays is 1.5 Egypt time. Despite the difference between the usual summer time of 11.5 Egypt time and Greenwich Mean Time of 1.5, which is the market entry time of 1.5 Egypt time. I cannot find an explanation for what happened with you in the pictures in the comments.