"User Data" and "Clear Data" on the Android app

Every document scanned using the app on Android increases the "user data" size - even though I "do not save original images to gallery". Cache is different, and can be cleared easily. My scanned docs all show up OK on cloud.

I send out scanned PDFs from my phone via Whatsapp. And these files are clearly stored in the corresponding Whatsapp folders. Deleting these files from the Whatsapp folders has no bearing on the growing "user data" of Adobe Scan.

1. Where can I see the contents of Adobe Scan's growing "user data" on Android?

2. What would "clear data" on the app do? 

3. Would "clear data" on the app wipe out any of the scanned documents on cloud?