Hi there! I understand you're seeing a blue screen when trying to use the Hard Rock Bet app on your Android 10 device with WebKit browser. Let’s work together to get this sorted out.

First, can you tell me a bit more about when the blue screen appears? For example:
- Does it show right after opening the app or after logging in?
- Is the app fully updated to the latest version?
- Have you tried restarting the app or your device already?
- Are you using the app directly, or accessing Hard Rock Bet through a browser on your device?

Based on what you've mentioned, here’s a simple plan to try:

1. Restart the App and Device
Close the app completely, then restart your device. Sometimes, this refreshes temporary glitches.

2. Clear App Cache and Data
Since you’re on Android 10, go to:
Settings > Apps > Hard Rock Bet > Storage > Clear Cache and then Clear Data.
This removes corrupted files that might cause the blue screen.

3. Check for App Updates
Visit the Google Play Store and ensure the Hard Rock Bet app is updated to the latest version.

4. Reinstall the App
If clearing cache doesn’t help, uninstall the app and then reinstall it from the Play Store fresh.

5. Network Connection
Make sure you have a stable internet connection (prefer WiFi or good mobile data). Sometimes slow or unstable networks cause loading issues.

6. Try Browser Access
If the app still shows the blue screen, try accessing Hard Rock Bet via your Android device's web browser to see if the issue occurs there as well.

If none of these steps resolve the problem, there may be a deeper app issue or server-side problem. In that case, please let me know, and I can guide you on contacting support or checking for wider outages.

Would you like me to guide you through any of these steps? Also, if any of these you already tried, let me know, so I can suggest more specific solutions!