Fitbit Sync

My iPhone 6+ with the latest update..... I downloaded the Fitbit Sync....... It is hanging in the Fitbit Sync with a little box which says... "Syncing data(be patient) up to a few minutes"...
It has been running with this box for several hours....
UPDATE: The latest update corrected my problem.... Thanks for the quick response

Eislingen about Health Sync for Fitbit