A. 1. Manually remove duplicates: Go to the Favorites section in JW Library and delete any duplicate entries by swiping left on the item and tapping 'Delete'. 2. Check for updates: Ensure you are using the latest version of the app, as updates may fix bugs related to favorites.

B. 3. Clear app cache: Go to Settings > General > iPhone Storage > JW Library and offload the app to clear temporary files. Reinstall the app afterward.