Hello! It seems you're having trouble with the RT News app, getting a "no server" error and experiencing a jumping screen issue. No worries, I'll help you troubleshoot this.

Let's start with a few simple steps to try and resolve this issue:

1. Check Internet Connectivity: Ensure your device is connected to a stable internet connection. Try switching between Wi-Fi and mobile data to see if the issue persists.

2. Update the App: Make sure that the RT News app is updated to the latest version from the Google Play Store. An outdated app can sometimes lead to connection issues.

3. Clear Cache and App Data:
- Go to your device's Settings.
- Tap Apps or Application Manager (depending on your device).
- Find and tap on RT News.
- Tap Storage.
- Select Clear Cache and then Clear Data.

4. Reinstall the App: If clearing the cache and data did not resolve the issue, try uninstalling the app and then reinstalling it.

5. DNS Configuration: Sometimes changing the DNS servers can help improve connectivity issues:
- In your Wi-Fi settings, click on your current network and choose to modify the network.
- Set the IP settings to static and change the DNS server entries.
- You could use Google's DNS servers: DNS1: 8.8.8.8, DNS2: 8.8.4.4.

6. Restart Your Device: A simple device restart can solve many temporary software issues.

If these steps do not resolve the problem, it could be due to server-side issues from RT News, which might need some time to get fixed.

Could you try these solutions and let me know how it goes? If it doesn't resolve the issue, we can look into further troubleshooting steps or check for server outages.