Hi there! I understand you're having trouble getting the Coupert app to open on your Windows device using WebKit. Let’s work together to get this resolved. To start, could you tell me a bit more about what happens when you try to open Coupert? For instance, does the app crash, stay on a loading screen, or simply not respond at all?

In the meantime, here are some general steps we can try to troubleshoot the issue:

1. Restart Your Browser and Device: Sometimes, simply restarting your browser or your computer helps clear out temporary glitches that might be blocking the app from opening.

2. Refresh or Reinstall the Coupert Extension/App: If you are using Coupert as a browser extension, try disabling it and then enabling it again or uninstalling and reinstalling it. This can often resolve loading issues.

3. Clear Browser Cache and Cookies: Cached data and cookies can sometimes interfere, especially with apps that require logging in or syncing data. Clearing these can give Coupert a fresh start.

4. Check Permissions: Make sure Coupert has permission to run on all sites or as required. Sometimes restrictions on the extension can cause it not to open.

5. Update Browser: Ensure your browser is updated to the latest version. Compatibility issues arise often with outdated browsers.

If you’ve already tried some of these, let me know which ones so I can suggest other fixes. Also, if you could specify if you’re using Coupert as a browser extension or a desktop/mobile app, that would help me narrow down the solution.

Looking forward to getting this sorted out for you!