A document in diScanner is separate from copies saved to Files, Photos, Mail, or another app.
Look for the document
- Open Documents. If selection mode is active, tap the selection button again to leave it.
- Check filenames, page counts, and dates. Switch between list and grid view if helpful.
- Look in Files and any destination where you previously exported the PDF.
- If you find an exported PDF, use Documents → + → Import files to bring it back into diScanner.
Deleting a whole document is different from deleting one page or one annotation. Do not rely on page-editing Undo to recover a document removed from the library.
There may be no recoverable copy if the document was deleted and you have no export or suitable backup. Avoid deleting the app as a troubleshooting step when it contains your only copies.
Export important documents to a second location and use recognizable filenames.