If you haven't already done so, disconnect the logger from USB and plug into AC power or it will not get a registration code!
1. Connect AC power. As a battery saving feature, the logger will not transmit data wirelessly if disconnected from AC power.
2. Wait for the display to turn on. After a couple minutes the logger should display a 6 digit code on the screen.
NOTE: If it does not dispay a code after 5-10 minutes, make sure the logger has the correct settings by re-attaching it to a computer and using the widget to view, edit, an save the settings.