Export your documents to your device memory

Scan a document or open a specific scan, then tap the Export button

Select Device Memory

Choose either your Device Memory or your SD Card

Tap on a folder

When you're done tap "Select"

If you don't see your Device in the top left menu:

Tap the button at the top right corner, then Show internal storage

Open the menu at the top left corner, and your device should now show up.