Groove agent not persent in Cubase 8 Ai

I have Cubase 8 Ai for some years but I cannot find in any of relevant directories Grove agent, and of course I cannot use it as it does not appear in VST instruments.
Any ideas of how to overcome this ?
Thank you

Install it?
The installer contains all relevant parts, maybe you unchecked Groove Agent at the first install.
Try it again with the original installer and deselect the components you already have.

I did download and followed instructions but nothing still…