my first ever kit was a wherry kit that came with my young's starter set. in my starter set was 1KG of brewing sugar, the wherry kit, spoons hydrometer etc.
i (mistakenly) followed the instructions that the resellers printed out (instead of the instructions on the wherry box) and they told me to add the 1kg of brewers sugar. this of course added to the OG, but also made it finish at a higher gravity.... hence why i'm asking if you added anything when you made it up in the fermenter.
i later brewed it again without the added sugar as per the box, and it still finished 2 points higher but still tasted nice... but i prefered it with the extra sugar though lol hence why i'm trying one with beer kit enhancer right now to see how it differs
