1. Open the Settings on your device.
2. Tap the Storage heading to open the settings page.
3. Tap the Other Apps heading to see a list of your installed app.
4. Find the Watch Duty app and tap the Clear Cache and Clear Data/Clear Storage buttons.
5. Uninstall the Watch Duty app.
6. Re-install the app from the app store.

If the problem persists, please contact support.