Zephyr data not showing up for only few user/system.
Clock drift can cause unexpected errors rendering add-ons.
NOTE: This is an ongoing issue on JIRA's end on the date of publication of this article 1st-AUG-2016.
Please follow the link for more details.
Please match the system time with google search result for current time.
If you don't have admin access, please contact your system administrator and change the system time.