If you are unable to connect your Smarther AC with Netatmo to the Internet: Turn off the thermostat at your electrical panel, then turn it back on and restart your Internet/Wi-Fi router. If this does not resolve the issue and you have already configured your router manually, it is possible that the router configuration is blocking the connection to the thermostat. In this case, refer to your router manual and follow the instructions: Step 1: In your computer's Internet browser, enter the local address of the router in the following format http://192.168.xx (for example http://192.168.1.1). This is indicated in your router manual. Step 2: You will sometimes be asked for a username and password. On most routers, these are "admin" and "admin". Otherwise, refer to your manual. Step 3: You can then access your router's configuration interface. Step 4: If the Wi-Fi channel was manually changed, it may no longer provide optimal connectivity. Check that the automatic Wi-Fi channel selection mode is enabled. Step 5: Finally, if you have one or more Wi-Fi repeaters in your network, make sure that each of these Wi-Fi access points has a different name (or SSID) and that the thermostat connects to the one with the strongest signal.