[HELP] Region Code Block not working?

Hi! I have a private server and I configured it to be accessed only from South America, but I do not want everyone from South America to access the server. I’ve tried putting country codes in the input for blocking via code, but even then people in those countries still can access the server. I do not know if it is a bug or if I put the wrong configuration in the input. Can anybody help me? Thank you.