Check the WiFi range where you placed the Adam. When your smartphone indicates that there is a WiFi range of at least 2 reception lines, you can assume that this is sufficient. Do you have enough range? The Adam may not find your Wi-Fi network immediately. In this case, press Scan again until the Wi-Fi network is found. Select the Wi-Fi network, enter the password of this network and save the network settings. Wait for Adam to reboot. If the network quality is insufficient, you can find a number of tips here to improve the WiFi signal. 

Adam only supports 2.4GHz. Adam therefore does not see 5GHz networks. A 5GHz network is especially useful for high internet speeds. However, its reach is a lot less good. Adam does not need a high internet speed, but a good range.