I bought a fitbit sense 2 two days ago. I paired it with my fitbit app and everything seemed alright. However, last light I set the sense 2 to sleep mode and set the alarm to 5:00 am. After few minutes, the sense 2 flashed its logo few times, displayed a red cross and then blackout. I tried to connect the sense 2 through the fitbit app, it diplayed the sense 2 is not connected through bluetooth. The app also request an update for the sense 2, but it failed for a few times. Today I unpair the sense 2 and reset it and then pair it again. Because I have to get the 4 digit pin from the sense 2 but the screen is blackout. Also the sense 2 now keeps flashing the fitbit logo and the app keeps asking for pairing. <span;>What should I do?</span;></span;>
