Fabfilter VST failed to register

I’m on MacOS High Sierra 10.13.6, and Audacity 2.3.0.

I’m trying to install a handful of Fabfilter plug-ins, and am getting the error message that Fabfilter Pro-Q 3 failed to register.

Normally, in Logic or other DAWs, when you add the plugin to a track, it pops up a screen to enter the product key and register. Anybody how to do this within Audacity?

Audacity does not support any “digital rights” mechanisms. Any plug-ins have to be fully operational before they can be used in Audacity.