Charge 5- Not capturing higher heart rate during exercise

[ByrdGirl]

I've had my Charge 5 for about a week. During my workouts, I know my HR gets near my near zone, like 165-180. This morning my Charge 5 showed a max of 115. The other day about a 130. What should I try to do here to trouble shoot?? Thanks so much in advance for any help. 

[DavideFitbit]

Hi, it's good to see you around in the forums for the first time, @ByrdGirl. 

I appreciate all the information that you've shared about the difficulty you're experiencing with your Charge 5 

Regarding the troubleshooting options that you mentioned, I recommend that you try restarting the device using the three pulse restart method described here below: 

1. Connect your device to the charging cable. For instructions, see How do I charge my Fitbit device?
2. Press the button located on the flat end of the charger 3 times (end of the USB cable), pausing for 1 second between presses. Then wait 10 seconds or until the Fitbit logo appears.

In addition to the restart, please follow the instructions in this article to improve the accuracy of heart rate information and check the information mentioned here about other factors that could affect your heart rate reading, this has been useful to other users who have experienced similar problems. 

Hope this helps, I'll be around.