If you open the app and don't see a shifter to connect with, read on!First, make sure your D1x Trail is on and flashing a red LED. If the D1x Shifter is on but it's connected to the remote you won't see it in the app. This is intentional so that no one can interrupt your system while you're riding. Turn off the remote by pressing and holding the Micro Adjust button for 4s. Finally, you don’t need to “pair” the remote in your phone’s Bluetooth device settings. Rather, you should only connect to the shifter via the app. If you did set it up as a device in your phone’s Bluetooth list, “forget” the device in system settings and try the app again.