Check your trade list and order status list and look at the price you entered (sell order) and the price you closed (buy order). The graph you provided is not really helpful in you situation because it doesn't show what you did. You just added some comments on what you think you did.
If you were short and you closed your position at a price lower than the initial entry price, then you should have made money.
Men, there is no other option..... 1 lot is by deafult and never changed. There were no other others before... but you gave me an idea. Im going to take a look at the order book, becouse is very weird.