Data processing issue – iScanner: PDF & OCR Scanner Review

The Iscanner app suddenly stopped working while scanning, and when I tried to reopen, a message "processing data" popped up, and then most documents and files I had scanned disappeared... I cannot emphasize the seriousness of this occurrence more...and wonder if you could help me recover all the data in a format I made.
Review by moriaska on iScanner: PDF & OCR Scanner.