What if I am having trouble getting the Licensing GPO installed?

First, try running the LT as Domain Administrator. 99.9% of the problems with the licensing GPO is that the person creating the licensing GPO doesn't have rights to do so. So, try that first.

If that fails, this https://docs.netwrix.com/docs/endpointpolicymanager/licensing/knowledgebase/troubleshooting/licensinggpo demonstrates how you can definitely get it to work.