Vocalign Ultra ARA Extension Problem

my spec : IMAC OS X 10.14.6 (Mojave ) / Cubase 10.5.20

It is all compatible with the Vocalign Ultra Plugin (ARA)

But ! i Can’t find it in extensions !

What’s the problem ?

Someone left a comment, right? ‘STCe’ is me.

Look at it from a minute and 12 seconds.

Within my project, I can’t see it in the extension.