Then you need to start all over again with a Factory Reset. Since you can't get to your settings for the easy way, you need to try the 3 button Factory Reset as follows :
On the watch, hold all three buttons for about twelve seconds. This triggers the 2-button hardware reboot after about eight seconds.
- When the Fitbit logo appears, then disappears, release the bottom right button, then continue holding the left and top right buttons until you feel a strong vibration. This indicates the factory reset was initiated.
- This process may take several seconds, and eventually, the Fitbit logo appears and the device boots and displays go to Fitbit.com/setup.
- If you fail to release the bottom right button in time or otherwise don't follow the procedure precisely , the Fitbit logo reappears quickly and boots without factory reset
