Ionic not giving sleep stages

[canavp]

I have had a Fitbit Alta HR for over three years with no problems giving the sleep pattern details (Rem, Light, Deep etc). Unfortunately recently the battery in it would not last for more than one day so decided to replace it with a new Fitbit, as that Alta HR is no longer available I bought a Iconic.

All this Ionic is giving me is the times that I am asleep (reasonably accurately), but no Rem, Light Sleep, or Deep Sleep data. I have tried it on both arms and both on top and underneath my wrist. As I never never had this problem with the Alta HR, is this Fitbit Ionic faulty. All other function appear to be working well though.

One other annoying feature is that quite often it is asking me to enter a numeric pass word which is a problem!. The numbers displayed on the watch are too small and my figures too big to put it in and subsequently have to at times have four or more goes at selecting the correct four numbers. This is really annoying. Is there a way to cancel this option?

Over all I'm quite pleased with the larger face size and the brightness of the display in full daylight (which is a great improvement over the Alta HR). The magnetic charging cable is also a great improvement over the re-charging method on the Alta HR. The only poor change is the strap fastening on it. Very difficult at times. Never had this problem with the Alta HR!.

So in a "nutshell" is this Iconic faulty and if so do I return it to Argos or to Fitbit for a refund and get one from a different manufacturer?

Moderator edit: subject for clarity 

[LiliyaFitbit]

Welcome to the Fitbit Community, @canavp.

Thanks for the details shared in your post. I understand how you are feeling and appreciate your feedback. We're constantly working on improving our devices and user experiences, and your comments are always welcome. Regarding your concern about the device lock, you can find the device lock and check the settings by doing the following:

1. In the Fitbit app, tap the Today tab > your profile picture > your device image.
2. Tap Device Lock.

For more information, see How do I use the device lock on my Fitbit device?

Upon checking with our Support team, I was told that you have already contacted them. If you still need help, please feel free to contact our team back as they have already all the details and special tools to continue assisting you. You can check our warranty policies here. 

See you around.