Hi Scott,
Thanks for reaching out with your Crio Pro WordPress theme question. It sounds like you are trying to install the Premium plugin as a theme.
Crio Pro comes in two parts, you would need to install the Crio theme itself which is the same as you would with the free version, and the second part is the Crio Pro plugin which is used to activate the premium features. Based on your question it sounds like you are trying to install the plugin as a theme. If you have activated your connect key on your site, once you have both the theme and plugin you should be able to use your premium subscription features.
I hope this helps David! Please let us know if you have any further questions for us.