The only tests we can allow you to retake are the first two training tests.
You can get more details about the training tests here
Client tests can not be retaken because our customers really want to see first impressions. They want to see how easy it is for you to find certain information or complete a check-out process. If you take the test over again, you'll have already seen where that information is located. You won't be sharing your thoughts as they occur in real-time. The first impression is incredibly important for getting usable, actionable data for the clients.
We know there are sometimes extenuating circumstances, so please feel free to reach out ot support if you have questions.