Showing "--" in calories and BPM

[KismetJ]

My summary never shows my calories burned just "--".

My watch seems to be calculating calories slower than when I first got it.

Manually trying to edit a workout force closes the app (Samsung 8+/android).

What is the best way to calculate a hiit workout? As a workout or a bootcamp? Because I used to log about 350 calories in 30min and a few weeks into this watch it takes about 45 min to an hour but somehow I can log calories faster walking? Then yesterday mid kickboxing the watch just had "--" where my bpm should have been. I am not confident that this watch is calculating my calories correctly. I've restarted the phone and the watch several times so that's not a "fix".

Moderator edit: subject for clarity

[AlejandraFitbit]

it's great to see you here @KismetJ.

I am sorry to hear about the inaccuracies issues you are having with your Versa and thanks for troubleshooting this by yourself.

Regarding the calories, take a look at the How does Fitbit estimate how many calories I've burned? article, where you will be able to find more information about this. And about your heart rate, take a look at this post and follow the steps there. The help article How do I use exercise apps and modes on my Fitbit device? will also help you to know how you can track your exercises. 

I hope this helps, let me know the outcome.