Hi there! I see you're encountering an issue with the MovieBox app not opening. To get a better idea, could you tell me if you see any error messages when you try to open it, or does it simply fail to launch?

While you reply, here are some initial steps you can try on your Windows 10 device with the WebKit browser setup:

1. Restart the app and your computer. Sometimes a quick reboot clears temporary glitches.

2. Clear your browser cache. Since you’re on Windows and using WebKit, clearing the cache can help if the app is accessing web resources internally. For most browsers, you can do this via Settings > Privacy > Clear browsing data (make sure to clear cached images and files).

3. Check your internet connection. MovieBox requires a stable internet connection.

4. Make sure your web browser and Windows are up to date. Outdated software can cause compatibility issues.

If you've tried these already, please let me know what you've done and any other details about the problem, such as error messages or when the issue started. That will help me guide you further.

Are you able to try these steps?