I am having the same issue. I have shared calendars on Office online and for
some reason the calendar online is not the same as the calendar on the
computer. There are appointments on the desktop in outlook that are not
showing up in the published calendar.
I have the options set to update the calendar automatically and I have tried
to delete the calendar and share it again several time. Each time the same
thing happens even with the brand new upload items from the outlook calendar
do not show up online to share with the other people subscribed.
I have also checked the date of the last update and it shows recently. I'm
at a loss I feel like I've tried everything.