To resolve the issue of "No connection to the server" in TeleGuard, follow these steps:

1. Check Internet Connection:
- Ensure your device is connected to the internet. You can try accessing a website or performing a speed test to verify connectivity.

2. Restart Your Device:
- Sometimes, simply restarting your device can resolve temporary network issues.

3. Update TeleGuard:
- Make sure you have the latest version of TeleGuard installed. Check for updates through the app store on your device – this can include fixes for connectivity issues - learn more.

4. Modify Network Settings:
- If you're using a Wi-Fi connection, try disconnecting and reconnecting to the network. Additionally, switch off your router for a few minutes and then turn it back on.
- If possible, attempt to connect using a different network (like cellular data) to see if the problem persists.

5. Check Firewall and Security Settings:
- Verify if any firewall or security software on your device might be blocking TeleGuard's access to the internet. Temporarily disable them to test if that resolves the issue.

6. Reinstall TeleGuard:
- Uninstall the app from your device and then reinstall it. This can help if there are corrupted files or configurations causing the connection problem - learn more.

7. Device Compatibility:
- Ensure your device meets the minimum requirements for TeleGuard. Check the official website for details regarding compatibility.

8. Contact Support:
- If none of the above steps resolve the issue, consider reaching out to TeleGuard's customer support for assistance. They provide round-the-clock support to users experiencing issues - learn more.

These steps should help you diagnose and potentially fix the connection issue with TeleGuard. If the problem persists, it may be due to an ongoing outage or server maintenance on TeleGuard's side, which they may be addressing.