Skype for Business do not display meetings

Retraction: "Calendar sync was working for me up until i decided to do a clean uninstall of SFB mac, remove all the folders listed in https://support.microsoft.com/en-us/help/2691870/how-to-do-a-clean-uninstallation-of-lync-for-mac-2011 and https://support.microsoft.com/en-us/help/3202833/how-to-do-a-clean-uninstallation-of-skype-for-business-on-mac then reinstall SFB Mac to try to resolve duplicate contacts with different statuses returned from contact search.  And now my meetings tab is empty and i see the logs that you report seeing."

My empty meetings tab in the SFB Mac app v16.3.240 was because we had disabled "AllowExchangeConnectivity" in the mobility policy which was still in effect because we hadn't applied the necessary CU.