The only libraries that show up in the Libraries tab are the „powered by KONTAKT“ libraries. Only those are registered via Native Access and show up there.
To load libraries that require the full version of KONTAKT you can use the „Files“ tab or the Quick Load function. Click on „Files“, navigate to the desired instrument and open it with a double click or simply drag it with your mouse to the open black space to the right.
For easier access to all your libraries through the Quick Load function, you can check out our video tutorial: youtube.com/watch?v=YIDj8gA_NKo