The release "Scottish Gaelic in Twelve Weeks" has an associated ISBN-13 barcode (9781841586441). However, when it's scanned by the app, it seems to convert it to ISBN-10 (1841586447), causing the lookup to fail.

Steps to replicate the issue:

• Open the back cover of the release
• Scan it with the Android mobile app (Version 5.0.4)
• Get an error message: Contents = 1841586447, Format = ISBN10