To resolve the "No connection to server" issue with TeleGuard, follow these step-by-step instructions:

1. Check Your Internet Connection
Ensure your device is connected to a stable internet source, whether it's Wi-Fi or mobile data. You can try browsing the web or streaming a video to see if the connection is active.

2. Restart the App
Close the TeleGuard app entirely and reopen it. This can refresh the connection to the server and may resolve temporary issues.

3. Restart Your Device
Sometimes, restarting your Android device can help clear any errors affecting connectivity. Power off your device completely, wait for about 30 seconds, and turn it back on.

4. Update the App
Ensure that you are using the latest version of TeleGuard. Go to the Google Play Store, search for TeleGuard, and check if an update is available. If so, update the app.

5. Check for Server Status
There might be ongoing server issues. You can check the status of TeleGuard or any announcements regarding maintenance on their official website or community forums.

6. Reinstall the App
If the problem persists, uninstall the app from your device and then reinstall it from the Google Play Store. This process can resolve issues caused by corrupted files.

7. Contact Support
If none of the above steps work, you may need to reach out to TeleGuard customer support. They provide 24/7 assistance that can help troubleshoot your specific issue further - learn more.

8. Network Settings Reset
You can reset your network settings. Go to your device's Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth. Note that this will erase saved Wi-Fi networks, so you'll need to reconnect afterward.

By systematically following these steps, you should be able to troubleshoot and hopefully resolve the connectivity issue you are experiencing with TeleGuard.