If your Fitbit Charge HR is no longer syncing - this works!

After doing this, my Fitbit Charge HR immediately began synching again:

1. Plug your charging cable into the USB port and insert the other end into the port on the back of your Fitbit Charge HR™. Your Charge HR will begin charging.
2. Press and hold the button for 10 to 12 seconds until you see the Fitbit icon and a version number (e.g. "V30"). (Mine started shooting green light rays out the back, FYI)
3. Let go of the button.
4. Unplug your tracker from the charging cable.

Source: Help article: How do I restart my tracker?


Love this Fitbit!