Hi, I purchased the most advanced package from Piqosity and as my son has been doing both the lessons and full length exams, he has been seeing repeat questions in the exams. I was disappointed because we expect exams to have its own exclusive set so I can evaluate his progress in areas where he needs to work on. How can I prevent exams from reusing questions from the lessons question bank? Please help as this did not happen in the other test preparation programs we signed up for in the past.