If you purchased from StudioPress then you can download the latest version from your account there. If you purchase from this site, then it will automatically give you access to your account. I have the beta version (which isn’t really that much different) added in your account here – https://appfinite.com/my-account so you can download and use that to get started. It’s beta, but it’s still perfectly fine to use in a regular production site.
BTW, I was notified about your email, so I went in and got your username switched over.