MSNinja,
Hi! I have done a few certification quizzes for a few different companies. That has not happened to me.
However, if I wanted to share something about one of those certifications, I might say, "Everyone, I have a question. I tried to take a certification test for [name of client] and the weirdest thing happened. The computer told me that I had zero wrong answers and failed this test. How can this be? Has this happened to you? If so, how did you handle it? I appreciate any feedback that you can provide because this situation is puzzling and frustrating."
In the example, I named the client but not the msc. You could do the same or the opposite in your actual question.
I hope you will receive some feedback soon.
Nature does not hurry, yet everything is accomplished. - Lao-Tzu