It is so confusing... Between the graphics not having a consistent pixel scale and the very austere ui it took me a long time to even understand what I had to do and even then I quickly discovered I hadn't actually understood anything, but even despite that I played it for a good while before stopping, so that must mean something. There is a game with potential in there ! The problem is the austerity of it all and also the lack of any sound.
In short, be careful of readability and juice it up a bit, and also make sure the players understand what they're doing, like with the candies, what does choosing one really mean, is the price what it gives you, is it what it costs you... Things like that. Anyway, I wish you well in your future projects !