Why can't I view a Resource?
Resources are not automatically downloaded to your Android device so you can manage the device's memory more effectively. If you can't view or open a Resource on your device, you need to download that Resource. There are two ways to determine if a Resource has been downloaded.
1. Cloud-available icon
2. File Not Yet Downloaded
3. Download the Resource File
If your device is connected to WiFi or data, then you can download Resource files. Tap the Download button or the Cloud-available icon to download.
For more detail, view this article linked below.