Install Octane Demo for Cinema4D R21.. but tab missing?? Tweet

[xijpxi]

So i've downloaded and installed the Octane demo to my "Plugins" folder for Cinema4D R21, but upon re-launching the "Octane" tab doesn't seem to appear nor is it in the "Extentions" tab. I've also triple checked that i do have my plugins folder location set in settings.. it's just not appearing no matter what i do. (pics attached for reference..)

Also, was considering just renting monthly. if I decide to go ahead and rent.. will that work? Is the setup/installation different than the demo?

Install directory : https://gyazo.com/533bfb3f528be90eec4f37816179642a

Tab missing : https://gyazo.com/95908da54c548bd6a78cf35c434e21a2