If you're stuck and can't progress within a certification training lab, we highly recommend you review the associated lab solution lesson. These can be found directly after the certification lesson that informs you to launch and complete a lab.
Lab solution lessons provide a step-by-step walkthrough of how to complete the lab, so they're the best place to get the support you need.
If you're still struggling, please raise a support ticket and our team will be happy to provide you with some extra assistance!