Hi! I understand you're seeing a black screen when trying to use the Storyteller app on your Android 10 device. Let's work through this together.

First, just to make sure:
- Is the black screen happening right after you open the app, or does it show some loading before going black?
- Have you already tried restarting your device or closing other apps?

Based on common fixes for this issue, here's a step-by-step plan we can try:

1. Close the app and background apps: Fully close Storyteller and any other apps running to free up resources.
2. Restart your device: Sometimes a fresh start clears temporary glitches or locked resources.
3. Check for updates: Visit the Play Store and ensure Storyteller is updated to the latest version. Developers often fix bugs in newer releases.
4. Clear app cache:
- Go to your device Settings > Apps > Storyteller > Storage > Clear Cache. (This deletes temporary files that might be corrupted without removing your data.)
5. Clear app data (if still not working): This resets the app to defaults, so you might lose saved progress unless it's cloud-synced. Same path: Settings > Apps > Storyteller > Storage > Clear Data.
6. Uninstall and reinstall the app: If the above fails, uninstall Storyteller completely, then reinstall from the Play Store. This ensures a fresh, complete installation.
7. Check your device storage and free space: Insufficient storage can cause apps to malfunction. Make sure you have at least a few hundred MBs free.

If none of these steps resolve it, it could be a more specific compatibility or server-related issue, and I can help you escalate it or look for any ongoing outages.

Let me know which steps you've tried or if you want me to guide you through any of these! Are you satisfied with this approach so far?