PDF Reader offers you ways to efficiently access your files via iCloud, Dropbox and Email.
Please go to PDF Reader’s Preferences to set up your iCloud account before activating the iCloud service.
1. Please make sure that you’ve set up iCloud.
2. Once you have logged into icloud, open the file you’d like to sync.
3. Click the iCloud button on the upper left corner and you will be able to sync your file.
Note: If you’d like to check out more about your account (iCloud/Dropbox) information, please go to PDF Reader’s Preference and click on the "Sync" tab.