To resolve the "no connection to server" issue with TeleGuard, follow these steps:

1. Check Your Internet Connection
Ensure your device is connected to the internet, as a weak or unstable connection can lead to server connection issues. You can test your connection by visiting a website or streaming a video.

2. Restart the TeleGuard Application
Exit the TeleGuard app completely and restart it. This often helps in refreshing the connection and resolving temporary glitches.

3. Update the Application
Make sure you are using the latest version of TeleGuard. You can check for updates in the app store on your device. If there's an update available, download and install it. This can fix bugs that may be causing connection problems - learn more.

4. Check Firewall and Security Settings
If you have firewall software or security settings on your device or network, ensure they are not blocking TeleGuard from connecting to the internet. You may need to add an exception for the app.

5. Switch Networks
Try changing your network connection. If you are connected via Wi-Fi, switch to mobile data or vice versa. This can help determine if the issue is network-related.

6. Re-login to Your Account
Log out of your TeleGuard account and then log back in. Sometimes, authentication issues can lead to connection problems.

7. Clear App Cache (if applicable)
If you are using an Android device, go to Settings > Apps > TeleGuard > Storage, then tap on 'Clear Cache.' This may help in resolving issues stemming from corrupted data.

8. Reinstall the Application
As a last resort, uninstall and then reinstall TeleGuard. Be sure to back up any important data or conversations if necessary - learn more.

9. Check TeleGuard Status
Sometimes the issue could be due to server downtime or maintenance. Check TeleGuard's social media or any official channels for announcements regarding outages.

10. Contact Support
If the problem persists after trying all the above steps, reach out to TeleGuard's customer support for assistance. They may have additional troubleshooting steps or insights into known issues - learn more.

Following these steps should help you resolve the connection issue with TeleGuard effectively.