Midi Guitar doesn’t show up in Live

My MIDI Guitar doesn’t show up in live. I’ve tried rescanning while holding down alt as you suggested in the daw setup guides, but it still didn’t show up. What should I do now?

-if you are running our demo: there is no VST in the demo. Full version on request.
-If you running Catalina with full purchased version: please install the proper version of MIDI Guitar. Start our trial to get a new download link via the update mechanism.

Yes, I have a demo version. thank you.