@Das0693 A warm welcome to our Community! Sorry to hear that your Charge 2 isn't syncing with your phone. You can try going to your phone's bluetooth settings and remove all devices listed there. Restart your phone and restart your device. After this try syncing them. Also, if you are using an Android device, check that your app has the necessary permissions (settings > apps > Fitbit > permissions) and make sure bluetooth and location services (GPS) are on. Regarding sleep tracking your device will start recording sleep after it detects an hour of inactivity. If you have a light sleep or move too much then this may difficult your sleep detection. Additionally you can try wearing your device on your non dominant hand to decrease the amount of movement it is subjected to. Finally you can restart your device. You can also manually log your sleep time.
About the heart rate try cleaning the back of the tracker with cotton and rubbing alcohol then change the hr settings to off, save and sync and turn it to auto, save and sync again.
Let me know how it goes!
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