I have installed Outlook 365 on my desktop Mac, my MacBook Air, my iPad and my iPhone. It is working fine on the iPad and the iPhone but on both the desktop mac (27" iMac) and MacBook Air I am unable to view any new mail in my InBox. I have switched from
PostBox to Outlook 365 as it is available across all my devices. Postbox works fine on both iMac 27" and MacBook Air. All the settings are fine and all previous mailboxes have synchronised OK. However new mail is not showing. I include a screenshot of the
Outlook result and the PostBox result below.


I need to be able to fix this so I can work across all devices. Is there some reason why the Inbox items do not show but all other folders are showing OK.
Kind regards
Ian