I already said this but nobody got to it. Why is the server not fixing when I repair it? I already reinstalled it twice and everytime a server breaks down I get stuck, I've done everything the tutorials told me to do, in game and on youtube.
Are you doing the math correctly? You always take the bigger number +/- the smaller number. Your answer will never be a negative, and if your answer is 10 or higher then you remove the first number in the integer. So 10 would be 0, 15 would be 5, so on.