A: Hello! After you’ve activated the Stackable plugin, make sure you have entered your license key to unlock the features. You should have gotten an email that contains your license key. To input your license key, check your WordPress plugins list page, look for Stackable in there then you should see an activate license link.

Regarding UI Kits, we have dropped this term already with our recent update for the Design Library. Now all our Design library entries adjust according to your block theme and Stackable settings.