If your using Wi-Fi mode then the SmartCom has to be on your network first. Press & hold Wi-Fi button on SmartCom until Wi-Fi LED flashes slowly then search on your phone for the SmartCom wifi network enter the passphrase which is inside the SmartCom then open your phones web browser and enter up address 192.168.2.1 this should bring up a web page for the smart com showing all available networks, select your home Wi-Fi network and enter its password, exit browser and try generating an app code on keypad.