If your Wi-Fi shows "no internet connection" despite your extender being connected, that might be due to the weak link with the main router or due to a faulty configuration. First of all, check the Hyzom extender installation steps again to verify so that it is connected to the right and existing Wi-Fi network.To improve signal strength, move the extension closer to the router. To restore the connection, restart the router and the extender. Verify that the firmware on the extension is current because out-of-date software can interfere with connectivity. If the problem continues, check the network configuration by logging into the extender's settings in a web browser. The problem might be fixed and internet access restored by restarting the extender and going through the Hyzom extender setup again.