Heart rate when sleeping and graph not showing anymore

[Remd]

When using Fitbit premium it used to show the heart rate while sleeping and also while running in a graph and average, now it’s not showing anything anymore only the average directly in heart rate menu. 
then recently it’s also not showing daily graphs anymore although the menu is there.

live and average heart rate are however still showing.

Also sometimes the daily readiness is showing no score (rarely though but was never doing that before)

i tried to restart and re-add the charge 5 to the app (latest iOS app on the latest ios 17) but that didn’t help. It seems to work fine otherwise. 

did google remove these features or is it an issue and if so any idea how to fix it?

Ive been a long time Fitbit user, I like the form factor and features so I dont want to switch brands unless features are removed or not working anymore, so thanks for any help! 

[Old_Unfit]

Heart chart issue also reported in Charge 6 forum and has been escalated. 

[Remd]

Thanks for the info, posted the link to this thread there also.

hope they will fix it soon! 

[Remd · Accepted solution]

Setting the phone to 24hrs instead of 12hrs worked for me, heart graph is showing again and also in the exercice tracking!
Although I prefer the 12hrs setting, it works for me as a workaround until it is fixed!