It is also possible to download the purchased content. However, it completely depends on Publishers, if they want to enable or disable downloads.
If the publisher has enabled publication for download, you will be able to see this before you purchase the publication. If you hover over DOWNLOAD, the message will reveal if the publication is or is not available for download.
Open the purchased content under READ -> PURCHASES. The publication will open in full-screen.
If the publisher has enabled the publication for downloads, you will be able to see and click a download button (down arrow) in the top left corner of the screen.
By purchasing publications, you get access to read the purchased publications on the Issuu app as well. To read the purchased content in offline mode on your app, you need to download it in your Issuu app.
NOTE: It doesn't matter if the publisher has disabled the download option in app, as it is not an actual download but an ability to save the publication.
On the Android app, open the Library and go to Purchases.
On the iOS app, open the Library and go to My Content
1. Open the particular publication and press the Download icon, or open the three dots in the bottom right corner. Then, press "Add to Downloads".
2. Go to your DOWNLOADS. Here, you can read the content, even if you are offline.