That's a kepub.
There's ways to download it (involves using the desktop app and obok).
If you don't want to go that route, you can contact customer care* and ask for a refund.
*I know you said you didn't want to, but it is an option to get your money back. If you go through their live chat option, they are extremely fast and friendly.
Last edited by peachiekene; 09-23-2014 at 01:26 AM.
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