'Access Denied' when downloading?

[Captain Booyah]

After I enter my email address and the order number to download Amnesia, I click on the download button (for Windows), but all I get is a blank screen with the words 'Access Denied' on it?

I've tried right-clicking the link and selecting 'Save Link As', but to no avail, as the downloaded WinRAR file said 'no archives found' when I tried to extract the files. I also tried downloading in Internet Explorer instead of Firefox, but it still refused to show me the webpage and said I needed to be logged in?

Any help with this is greatly appreciated!