Dear M. Ropertz - ROPERTZ TrafficConsult
Good day! Thank you for posting in the Microsoft Community. We'll be happy to help!
First of all, we apologize for the inconvenience and inconvenience caused to your work. Based on your description, I have a general understanding of your question, since we specialize in technical support for Microsoft 365 Business Exchange Online, which is not professional for the Outlook for Mac, in order to better help you and no longer waste your more time. I recommend that you ask for help from our dedicated team, where technical engineers specialize in these related issues, and experts will focus on inquiries to further assist you, for details, please kindly refer to: Contact support within Outlook for Mac
By the way, if you are also using OWA(outlook web app), then maybe you can refer to this official document for reference if you need: **** Use offline settings in Outlook on the web - Microsoft Support
Thank you in advance for your understanding. Your patience and cooperation will be greatly appreciated. I hope all the best!
Sincerely
Kerry Chen | Microsoft Community Moderator