The easiest way to connect your bike is to simply enter a ride and tap on the red bar at the top to connect. MAKE SURE YOUR BLUETOOTH IS TURNED ON.
There will be a pop-up in which your bike will appear. Select your bike and you are ready to ride. If your bike does not appear on screen, look to the bike for your answer. If the blue light around the silver button is flashing, it means it is looking to connect, double check that your bluetooth is on, on your device and restart the app to refresh. If the blue light is solid, this means it is connected to something. Check that any other devices you have recently connected to are closed out of the app. If this does not work, check the bluetooth settings on the device you are trying to connect to. Remove or "forget" the connection from the bike and connect via the app only.