Hey before you send in a request to reevaluate your paper please make sure there isn't any mistake from your side in comparing your answers to that of the answer key released. Make sure you're following the right answer key and that you aren't skipping any questions.

But even after that you want to send in your paper for revaluation, then you can visit the official website and check for the dates when you can apply for revaluation.

Make sure you're regularly updated with the official website so that you don't miss out on important dates.