Hi! I see your Libre app keeps quitting or refusing to scan your sensor. I'd love to help you get this sorted out. Just to clarify, are you experiencing the app closing immediately when you try to scan, or does it happen at another point? Also, which version of the Libre app are you using?

Meanwhile, I’ll guide you through some common fixes for app crashing and scanning issues on Android devices like yours (Android 10 with WebKit):

1. Restart Your Phone
Sometimes a simple reboot clears temporary glitches affecting the app’s performance. Please turn your phone off and on again and then try scanning.

2. Clear the Libre App Cache and Data
- Go to your phone’s Settings.
- Tap Apps & Notifications (or just Apps).
- Find and select your Libre app.
- Tap Storage & cache.
- Tap Clear Cache first, then Clear Storage/Data (this may log you out, so keep your login info ready).

3. Check NFC Settings
The sensor uses NFC (Near Field Communication) to scan:
- Open Settings > Connected devices or Connections.
- Make sure NFC is turned on.
- Try toggling it off and on again.
Note: Your phone must have NFC hardware for scanning sensors.

4. Update the Libre App
Make sure your Libre app is the latest version from the Google Play Store. Outdated versions can cause crashes or scanning failures.

5. Reinstall the App
- Uninstall the Libre app.
- Restart your phone.
- Download and reinstall the latest version from the Google Play Store.

6. Sensor Compatibility
Confirm the sensor you're scanning is started by your device/app. Sensors started with another device or reader cannot be scanned by your phone.

7. Check for Android OS Updates
Sometimes app conflicts arise after OS updates; ensure your phone’s Android 10 has the latest patches installed.

If after these steps the app still crashes or won't scan, it might help to check if there's an ongoing app issue reported by other users or an incompatibility with your specific device model.

Would you like me to walk you through any of these steps? Or if you can share more details about exactly when the app crashes or any error messages you see, that would help me tailor a solution better.

Are you satisfied with this initial troubleshooting plan?