ok so I have just installed a clean build of Concrete5 (never used it before)
I then purchased a theme, creating an account on the concrete5 site at the same time, and linking the site to it.
Everything I have read tells me to either download the theme and install it manually or use the extend concrete5 to install it, but neither of these is working for me.

first, I have yet to see any download option, it does not exist anywhere. The theme is linked to my project (this is not very intuitive)
And secondly on dashboard, when I go to extend concrete, there are no themes, or anything listed at all?

How the hell do I install a bloody theme, and why is it not intuitive?