First, you need to send the document to your own personal address, or already have it in your inbox.
Next, open up the iOS Mail app, open the email containing the document and open the document itself.
Now you can tap the “Open In” button, as shown below, and this should allow you to select Flash Reader and start the importing process.
NOTE: The same applies for ALL iOS apps that can open files, including Google Drive and Dropbox!
PLEASE NOTE: Only DRM-free (no copy protection) books can be imported, as it is illegal for us to remove the protection.
Using the Open In feature:
Opening in Flash Reader: