Hi there! I’m sorry to hear your FreeStyle Libre 3 app won’t open after clearing the cache. Let’s work together to get this sorted out.

To start, could you please tell me:

- When you say you erased the cache, did you also try restarting your phone afterward?
- Are you seeing any error messages or does the app just fail to open at all?
- Have you checked if the app itself needs an update from the Google Play Store?
- Is your phone’s Android 10 fully updated with the latest system updates?

Based on what you shared so far, here’s a step-by-step approach we can try:

1. Restart your phone if you haven’t already. Sometimes a fresh reboot helps reset things.
2. Check the Google Play Store for any updates available for the FreeStyle Libre 3 app and install them.
3. If no update or still no luck, try clearing the cache again:
- Go to Settings > Apps > FreeStyle Libre 3 app > Storage > Clear Cache.
- Do NOT clear data yet, as that might remove your settings or saved info.
4. If still stuck, check for any pending Android system updates:
- Settings > Software Update > Download & Install.
5. If the app remains unresponsive, uninstall and reinstall the FreeStyle Libre 3 app from the Play Store. Your sensor readings and account info should be preserved with your login.

Let me know which steps you have already tried and how it went. This will help me guide you better!