Difficulties with heart rate, calories and sleep-Charge 3

[KeepGoing22]

• Charge 3 - burning 5000 calories a day but I’m in sedentary with 500 steps a day.
  heart rate also ridiculously high non stop - I should technically be dead with these stats. 
  only thing accurate is steps, even sleep is logging 12 hours a day.
• reset Fitbit twice but no difference 
• how can I fix this?

Moderator edit: updated subject for clarity

[EdsonFitbit]

Welcome to the Fitbit Community, @KeepGoing22.

I'm sorry to hear about the difficulties you experienced with your Fitbit Charge 3. Thank you for trying to get them resolved before contacting us.

Since your calories burned are based on your gender, sex, height and weight, please make sure this information is correct. For instructions on how to manage your Fitbit profile, please visit this article.

You can find detailed information about how your calories burned are calculated in this article in the menu "How does my Fitbit device calculate calories burned?".

In addition to the regular restart, you can perform a long restart:

1. Connect the device to the charging cable. 
2. While the device is plugged into the charging cable, press and hold the button down for 15 seconds. 
3. The device turns on and shows a battery icon. Two vibrations occur: first a short vibration, then a medium vibration. 
4. The device turns off.
5. The device turns on and shows a progress bar and short vibrations occur. The progress bar completes. Note: A total of 7 short vibrations occur. 
6. Remove the device from the charging cable. The device shuts down.
7. Important: Plug the device into the charging cable again. 

Hope this helps.