Charge 3 stopping exercises itself

[AliceHE]

Hi, I’ve been using my Fitbit everyday to track my workouts which last approx an hour. during this time, I look to track my heart rate and notice the workout has ended on its own. I thought maybe I was turning it off my accident, but today I looked down, tapped the screen to check my heart rate and the screen just faded, went blank and about a minute later came back up with the time (home screen). I then have to start a brand new house workout. Please can you help? 
thank you 

Alice 

Moderator edit: subject for clarity

[AlejandraFitbit]

It's great to see you around, @AliceHE.

If you are having problems with your exercises and display, I recommend restarting the unit by following the steps provided in the help article: How do I restart my Fitbit device?. After this process, test the unit.

Let me know how it goes. 🙂

[AliceHE]

Good morning Alejandra, 

I re-set the device on Wednesday before you had replied and it happened the next day on the Thursday. 

I have reset it again since your mail and it hasn’t done it again yet, but like I said it’s not all the time. I’m just concerned the watch is only 1 year and 2 months old and the main use of it for me apart from steps, is the exercise 

thank you 

alice 

[AliceHE]

Hi Alejandra, 

hope you’re well and staying safe still, sorry to reply again but I tried the re set again yesterday and today the Fitbit went black faded back on but stopped my exercise. Please can you advise what I should do next? 

image attached 

 

thank you 

Alice