I can't open my F3 on my Laptop

Have you noticed this issue before, on the same laptop? Does your laptop keyboard have a function key? (Usually blue, in the lower left, and labeled "FN") Most laptops squish as many keys "in to one" as they can. The function keys (F1-F12) are usually the first to go. If you look at your F3 key, I bet it has several notes on it. One is probably a lightbulb, and the actual "F3" key is a combination of your function key and that key. IE: FN+F3

Not a bug with the game. Please get in touch with the corresponding support to get help in case you can't get it to work yourself.