VST plugin is not working

So I installed a VST instrument plugin OB-Xd. It shows in the Media column. But the window for the plug-in doesn’t show.

I am using M1 apple. The plugin company does say it works with the M1 chip. I’m wondering if I messed it up by accidentally having Cubase open at the time I installed it.
How can I fix it?

Thank you.

What you mean with “Media column”?