Hi! I understand your FreeStyle Libre 3 app won’t open on your Android device. Let's try to get this sorted out together.

Just to start, could you tell me if you’ve already tried restarting your phone or force-closing the app? Also, did the app ever open before or is this the first time it’s not opening?

In the meantime, here are some step-by-step things we can try that have helped others with similar issues on Android 10 devices:

1. Force Close the App:
- Go to Settings > Apps > FreeStyle Libre 3.
- Tap “Force Stop” to close it completely.
- Then try opening the app again.

2. Clear the App Cache:
- In the same Apps screen, tap on “Storage.”
- Tap “Clear Cache.”
- Try reopening the app after this.

3. Update the App:
- Go to the Google Play Store and check if there’s an update available for the FreeStyle Libre 3 app.
- If yes, update it and try opening again.

4. Reinstall the App:
- Uninstall the app completely.
- Restart your phone.
- Download and install the app again from the Google Play Store.

5. Check for System Updates:
- Sometimes the app needs the latest system components.
- Go to Settings > System > System Update and install any available updates.

6. Check Device Storage:
- Ensure you have enough free storage space on your phone for the app to run properly.

If after all these steps the app still won’t open, there could be a compatibility or bug issue, especially since the app is being updated frequently. I can also check recent user reports for more info.

Could you please let me know what you’ve already tried and if any error messages appear when you try to open the app? That will help me give you more precise guidance.