Hi there! I understand your Four app is getting stuck on the opening screen and not loading anything. Let's try to get this sorted out together.

To start, can you tell me if you’ve already tried any troubleshooting steps? For example, have you closed and reopened the app, restarted your device, or checked for app updates? This will help me avoid repeating steps and focus on what’s next.

Meanwhile, here are some standard steps we can try:

1. Force Close and Reopen the App: Close the app completely (make sure it's not running in the background) and then open it again.

2. Restart Your Device: Sometimes a simple restart of your Windows device can clear temporary glitches blocking the app.

3. Check for App Updates: Ensure you have the latest version installed. Since you’re on Windows with WebKit, if this is a web app, try clearing your browser cache or cookies and then reload the app.

4. Clear Browser Cache (if applicable):
- Open your browser settings.
- Find the option to clear browsing data.
- Select “Cached images and files” and “Cookies and other site data.”
- Clear them, then try opening the app again.

5. Check Internet Connection: A weak or unstable connection can cause loading issues.

If none of these work, it might be related to a server issue or an account-specific problem. Let me know what you’ve tried, and if you continue to experience this, I can help dive deeper or guide you on how to reach support.

Are you able to try these steps now?