Calories

How tall are you, and did you put that you wanted to lose 1kg/2lb per week in the guided setup?

1200 is the minimum it will recommend for a female. Most people can, and should, eat more than that if they're trying to lose weight - 1200 is appropriate for old short sedentary ladies with five pounds to lose, and at least 2 of those things don't describe your situation - you don't mention how much you exercise if at all, but even so, if you're not menopausal and over 5'4", you can definitely eat more and still lose.

2 stone is really not very much at all. Redo the guided setup and tell it you want to lose 0.5 or even 0.25kg (1 lb or 0.5 lb) per week instead - if you try to speedrun it you're going to gain both stone back and they'll probably bring friends next time.

Weight loss is also not linear; even if you weighed yourself right now, setup your MFP to lose 0.5kg per week, stuck to your budget religiously (weigh and log accurately every gram of food that passes your lips, eat exactly your allotment of calories), and weighed again at exactly this time next Tuesday under the exact same circumstances (same amount of clothing, same scale in the same place, same time since last eating/drinking/using the toilet), you may not see a loss of exactly 0.5kg on the scale from one week to the next, because of a thousand factors out of your direct control. I, and many other people with ovaries, tend to see little to no downward movement for a week or two, maybe even a slight uptick the next, followed by a "whoosh" loss of 2-3 lbs the following week, in the course of a month. (This is also why the "if every day were like today..." message you get when you close the diary is bunk - there's so much more that made today like today beyond what you ate and how much you moved that you cannot count on that estimate for anything.)

Hey there looking to drop as much body fat as possible