You can download them from the mega cloud more conveniently. If you want to download from issuu there should be a box with an arrow in it at the top of the page after you open up a publication and full screen it, which should give you an option to download (you might have to sign up for a free account, I'm not sure) Pretty inconvenient, I know. This is one of the benefits of using the mega cloud, as well as downloading scores of books at the same time. Hope you figure it out