Spectralayers as an Extension in Cubase 10.5

So, trying the demo of Spectralayers 7 Pro, runs as standalone just fine, but can’t get it to show up as ARA or an Extension in Cubase 10.5
Why is this so hard to set up ? I’ve been searching here for quite a while, anybody have this working ?

select an audio event. then you see extension.
if you don’t see it, try to reinstall. the “extension” are in the audio menu (but i guess you already knew that).
it works only for audio.

it is not diffucult.

OK, second time install and it shows up as an extension, thanks for the tip Howl, I though it was a hidden setting somewhere, led me on a time wasting chase.