Hi there! It sounds like you're facing trouble logging into the Sling app due to a server issue message and the app being unresponsive. Let’s try to get you back up and running.

To start, could you tell me if this problem happens on just one device or multiple devices? Also, have you tried any steps already, such as restarting the app or your device?

Meanwhile, here’s a step-by-step approach we can try together:

1. Close and Relaunch the Sling App
Sometimes the app gets stuck, so fully close it (make sure it’s not running in the background) and then open it again.

2. Check Your Internet Connection
Ensure your Windows device has a stable internet connection. Try opening a few websites to confirm.

3. Restart Your Device and Router
Power off your computer and your internet router/modem. Wait about 30 seconds before turning them back on. This refreshes network connections.

4. Update the Sling App
Since you are using Windows and a WebKit-based browser, ensure your browser is up to date as Sling TV uses the browser for streaming. You can check for updates in your browser settings.

5. Clear Browser Cache and Cookies
Sometimes old data can cause login problems. Clearing your browser’s cache and cookies often helps.

6. Try Logging in Using a Different Browser
If possible, try logging into Sling on another browser (like Chrome or Firefox) on your Windows device to rule out browser-specific issues.

If after these steps you’re still stuck on the server error, it might be a temporary server-side problem with Sling. Occasionally, Sling blocks certain IP addresses for security, requiring a backend reset from their side.

If you want, I can guide you on more advanced steps or advise how you could contact Sling’s support directly for account-specific issues.

Does this sound good? Let me know what you’ve tried already and how the steps go. I’m here to help!