Mademoise11e: I am playing on a mac, when I press F1 it just controls my screen brightness. :/
Using a laptop, by any chance? Does your keyboard show alternate functions on your function keys? This is the case with my Windows laptop (and most others, though I don't know about Apple laptops), and I have an extra button on my keyboard labeled 'Fn' (if it exists on your Mac, it might be called something else) that I have to hold if I want to use F1. (Or I
would have to if I hadn't reversed that setting, making it so I don't have to hold 'Fn' every time I want to use a function key, but I do whenever I want to -- for example -- toggle the touchpad or change the screen brightness.)