In theory, this works well. In practice, any privacy software or privacy-favoring Firefox settings seem to shatter its functionality. It constantly logs me off, and when I am logged in the app does not display my gold and key balance, saying it is zero. It also does not properly detect when I have completed the demo. Finally, Amazon One-Click setup is incredibly unintuitive, and I could not select a prior address. I want this to work , but right now it isn't. 2 stars because its website works.