If you stop receiving emails, and Outlook says "working offline" it is likely you have activated the WORK OFFLINE button.
To resolve, do the following:
From the Outlook Toolbar, click SEND/RECEIVE:
You may notice the WORK OFFLINE button is grey. This confirms you are working offline:
Click ONCE on the WORK OFFLINE button to switch back to Online mode.
Emails should start coming through.
You can watch these steps in action here: https://www.screencast.com/t/3xxJS3MWAYYY
If this problem does not resolve your mailflow issues, please call 01933 229133.