Download FluxPlayer from the following link, install it and redeem code. Requires Intel/AMD based Windows 7 (SP1) or newer.
Use the browser on your Mac (Intel based OS X 10.9 or newer) and enter the following link to install FluxPlayer.
Redeem your code here and log in to access your content with your web browser
Redeem your code here and log in to access your content with your Roku stick