Hi there! I understand your High 5 Casino app games aren't opening on your Windows 10 device using a WebKit browser. Let's figure this out together.

Could you tell me if this problem is happening with all games or just specific ones? Also, is it the app or are you accessing the games via a web browser? Additionally, have you tried any troubleshooting steps so far like clearing cache or restarting the app/browser?

In the meantime, here are some general steps to try that often help:

1. Clear your browser cache and cookies: Sometimes stored data can cause loading issues. Since you're on a WebKit browser on Windows 10, you can find this option in your browser settings under Privacy or History.

2. Restart the browser or app: Close it completely and reopen to refresh the session.

3. Check your internet connection: A weak or unstable connection can prevent games from loading.

4. Disable browser extensions and ad blockers: Some extensions can block game scripts.

5. Try using incognito/private browsing mode: This disables most extensions and clears temporary data which can help isolate the issue.

If you've already tried these, let me know, and we'll explore more specific or advanced fixes to get your games running. Also, if you can share any error messages you see, that would help a lot.

Looking forward to your reply!