Hi all, I'm a 16 year old who has recently experienced this issue after getting my new fitbit a couple of days ago, but managed to resolve it. (I use an Inspire 2 fitbit.) Before I begin, I've noticed that a lot of people are confused with the advice the "best answer" gives us.
To those of you looking to "clear user data", this option is found after scrolling through the settings found on your fitbit, not your phone. However, this did not resolve the issue for me.
I haven't seen this tip yet, so I thought I'd share it. Originally, I tried everything I could find here, from deleting the data (from the app), deleting my account, restarting the device multiple times, etc. This is the only thing that helped.
Firstly, check that there is no green LED light flashing underneath the fitbit. If there is, AND your heart rate isn't tracking, then I'm not sure if this is going to help you. I had no green LED.
What I did was:
1. hold down on the side button(s) of my fitbit to open the quick settings. you should see the initials "DND" if you're on the correct screen.
2. scroll down to the bottom of these settings until you reach the bottommost symbol that either says "on clip" or "on wrist".
3. if your fitbit shows "on clip", change it to "on wrist" by clicking it. if it already says this, that's okay, keep it there.
4. go back to the clock face by holding down the side button(s).
5. scroll up to the settings (which should look like a gear symbol and should be at the very top) and click on this.
6. scroll downwards, and below the "phone GPS" section, there should be a section called "heart rate." (this may or may not have been there before depending on whether or not your fitbit was "on wrist" or "on clip".)
7. ensure that this ON, and if it already was, click it OFF and then ON AGAIN.
8. return to the clock face by pressing the side button(s) twice.
9. scroll down from the clock face to the heart rate, and hopefully it should be tracking your heart rate.
10. i made the mistake to declare it hadn't worked while the fitbit was still charging. to fully check if this has worked or not, unplug the fitbit if yours was charging, check for a green LED, and put it snug on your wrist.
This worked for me, and hopefully it worked for you. This was a real pain to deal with and I really wish that yours becomes normal again. 🙂
