To locate the PDF in your Download folder:

1. Tap Open Kindle Docs.
2. At the top of the screen, you should see three options: Send-to-Kindle, Cloud Drive, and Local Storage.
3. Tap Local Storage. If you don’t see a list of folders, tap the arrow in the top-left corner of the screen until you see the folders inside Local Storage.
4. Tap the Download folder to locate the PDF.