Hi there @GregZ, good to see you around. I wonder in which sense is delayed the hear rate date? Please let me know more details of this issue you have found so I can investigate further. Perhaps we can find the solution to address this issue.
In the meantime, if you have recently updated the app please try to force closed the Fitbit App:
1.Log out from the Fitbit app and double tap the home button on your iOS device. Your open apps will show on your device's screen.
2. Close the Fitbit app by swiping the app image in an upward motion.
3. Reopen the Fitbit app, log back in and try again.
Keep me posted how it goes, I'll be around.
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