It is our biggest goal to try to get every candidate through the exam. Although the passing rate of our F3 simulating exam is nearly 100%, we can refund money in full if you are still worried that you may not pass the F3 exam. You don't need to worry about the complexity of the refund process at all, we've made it quite simple. And if you really want to pass the exam instead of refund... https://www.easy4engine.com/F3-test-engine.html