Blaze not showing heart rate

[W87s]

Heart rate tracker is showing --!! It occasionally shows a number but then disappears again. 

It sometimes works when exercising.

I've have tried all the troubleshooting steps 

Tried wearing it in different places on both arms 

Tried restarting it

Is there anything else I can do?

I have a fitbit blaze and I've only had it for a couple of days

Moderator edit: Clarified subject

[FerdinandFitbit]

Hi there @W87s! Great to see you in the Fitbit Community Forums! 🙂

I'm sorry to hear that your tracker seems not to be recording your heart rate as it should. Since you've already  tried restarting it and wearing it in different positions (which I'd like to thank for doing), there's something else. It happens in some cases that the person who is wearing the tracker has hairy arms and sometimes too much hair will interfere with the tracker getting a solid heart rate reading. If this could be the case, you could try wearing your tracker on the in-side of your wrist and see if this makes any difference.

Try it out and let me know how it goes!

[W87s]

Thanks for your reply

I wouldn't class my arms as hairy although I did try wearing it underneath.
It got a little bit better but the dashes would reappear under 78bpm

Think I will have to return it as it's not ideal to be wearing it upside
down and i don't want to be shaving my arms