If you are opening it in your mobile then it won't show. Go for PC or a laptop to check it. 

While drawing answers in answer key you have a option on computer to mark question as attempted. I think you have forgot to mark them ,that's why it is showing not attempted. I don't know if that was compulsory or not to mark them. But I suppose it wasn't because you have submitted your answer sheet too.Hope you got your answer.