Heart rate not displaying and sleep tracker not registering

[SamTowle]

Since Last Friday I have frequently been wearing my Ionic. Despite that, my heart rate is not being tracked and only shows me “- -“ whenever I look at it. Similarly, on the app, no data is being registered and it only shows my resting heart rate for each day.

as regards the sleep tracker, each nights data only shows the length of the sleep and restlessness but no data as regards heart rate 

I have tried cleaning the sensor on the back of the ionic, restarting the Fitbit and other things but I haven’t a clue... anyone? Would be appreciated.

[MarreFitbit]

Welcome to the Fitbit Community @SamTowle! Thanks for already cleaning the sensors and restarting your tracker. 

As you may know, your tracker can have difficulty finding a signal, typically due to the tracker's fit. For example, wearing your band tightly may constrict blood flow in your wrist and affect the signal. We recommend experimenting with how high you place the tracker on your wrist. When you're not exercising, wearing the tracker just above the wrist bone--as you would a watch--typically works fine. However, moving the tracker up a couple inches can be helpful during high-intensity exercises or exercises that cause you to bend your wrist frequently. If you haven't already done so, please review our recommendations for wear and other tips shared by @SantiFitbit. 

If you're wearing the tracker correctly and the heart rate setting isn't turned off, try changing the setting (either Auto to On or On to Auto) and then syncing your tracker. The change won't take affect until you sync. If heart rate doesn't seem to start tracking correctly, try restarting your Ionic.

Note that on Fitbit Ionic, the heart-rate value appears gray if your watch is searching for a stronger reading.
 

Occasionally your device may have difficulty getting a strong signal. If you don't see your heart rate on your device, first make sure you are wearing it correctly. After a short wait, you should see your correct heart rate again. On Ionic, make sure the Heart Rate setting is On. For additional troubleshooting, see Why don't I see my heart rate on my Fitbit device?

In regards to the sleep stages, keep in mind that you need to record heart rate to calculate sleep stages. If you were to turn off heart rate, your sleep logs will go back to the classic style.

In addition, I think it's great that you update the Fitbit app to the latest version (iOS and Android). I always recommend keeping both the tracker and the Fitbit app up to date with the latest versions. 

Try the recommendations and let me know the outcome!