I performed the test and I passed and i received email stating that Test is not valid due to some certain reasons such as Internet issue, or web came problem etc. Anyone facing same problem.
sorry to hear, doesn't sound like a common issue. Probably you will have to give it again, but best to contact them using the webform to learn more. You may have 2 more attempts.
next time make sure there is stable internet, good webcam, lighted room, less noisy, and don't look here and there just focus on screen / test - just saying, they monitor these things