Hi there! I understand you're having trouble opening the Hard Rock Bet app on your device. To help get this sorted out, could you tell me a bit more? For example, when you try to open the app, does it crash immediately, show an error message, or just not respond? Also, are you using the app or accessing Hard Rock Casino through a web browser on your Android 10 device?

In the meantime, here are some straightforward steps to try:

1. Restart your device: Sometimes a fresh start can resolve app loading issues.

2. Check your internet connection: Make sure your device has a stable internet connection (Wi-Fi or mobile data).

3. Clear app cache and data:
- Go to Settings > Apps > Hard Rock Bet.
- Tap on Storage.
- Select Clear Cache and then Clear Data.
This can resolve issues caused by corrupted temporary files.

4. Update the app: If you have the app installed, ensure it's updated to the latest version via the Google Play Store.

5. Reinstall the app:
- Uninstall the Hard Rock Bet app.
- Restart your device.
- Download and install the app again.

6. Try the mobile website: If the app still won't open, access Hard Rock Bet via a mobile browser by going to https://app.hardrock.bet to see if the issue is app-specific.

If you've already tried some of these steps, please let me know which ones, and if there's any error message or behavior you notice, so I can guide you with more advanced troubleshooting.

Are you comfortable trying these out and sharing what happens?