Ok did you note what price did you open and close the two positions at from the "Trades" window on IB TWS after you closed the two trades? Whatever the prices shown there would be the prices that you actually opened and closed the positions with. And just like what the "10% Depreciation Notification" window says, you can also check your Activity Statement for the two days that you opened and closed the positions, whatever the prices that you see there would be the prices at which your positions were traded and P/L calculated. Unless you are willing to post a screenshot of your "Trades" window that contains the details of your positions and the Activity Statement, there is not much we can help you here.
If you are still not sure, it's best to check with your broker as they would be the best people to explain everything to you.
Here are the trades.
I uploaded the full day and a little of the day before to make it easier. This is realized. IB took the whole thing I mentioned. Time is GMT.
Sorry, couldn't resist...