Hi! I understand you're encountering an error message "Oops something went wrong" when you get to the payment screen on the Radisson Hotels app. Let's work together to get this resolved.

To help me guide you better, could you please let me know:
- Are you using the Radisson Hotels app or the website on your Windows device's WebKit browser?
- Have you tried using a different payment method as the message suggests?
- Have you already attempted any troubleshooting steps such as closing and reopening the app/browser, clearing cache, or reinstalling the app?
- Is your app updated to the latest version available?

Meanwhile, here’s a general step-by-step approach to try:

1. Restart the app/browser: Close and reopen it, then try again.
2. Clear cache and cookies: In your WebKit browser on Windows, clearing cache can resolve some issues caused by stored data.
3. Try a different payment method: Sometimes payment gateways have temporary glitches or card restrictions.
4. Check your internet connection: Ensure it is stable.
5. Update the application: Make sure your Radisson app is up to date if using the app.
6. Reinstall the app: If using the app, uninstall and reinstall it to fix any corrupted files.
7. Try booking on a different device or browser: This can clarify if the issue is device-related.

If these don’t do the trick, the problem might be on the payment gateway or server side, which would need assistance from Radisson’s support team.

Let me know which steps you've tried, and any other details, so I can help you further!