Please unplug and replug to power-cycle the LeLink if it has been on for more than 4 minutes. The app will scan and display a list of the LeLink devices. Click the item to configure. The app does not need the pairing password. If you are asked to enter password, you may choose cancel to skip. Please record the pairing password if you enable password protection. Without correct password the LeLink will not perform OBDII functions. After enable/disable the password protection, you should power-cycle the LeLink to make the change effective. If you need help Online FAQ page at http://www.outdoor-apps.com/enginelink.html Send us email at [email protected]