Nevertheless, seeing your desperation for assistance, I will try my best to help you with this issue.
It is important for you to post your thread in the correct forum so that users equipped with the right expertise can better serve you. (You don't have to create a new thread, simply edit it!) I am an Independent Advisor for MS Community and I am sorry to inform you that you have posted this thread in the wrong forum. I know how important this is to you as it can be very disruptive to your work, rest assured, I am committed to help you to resolve this issue together
I am sorry to hear that your Office 365 for business account does not work with Apple Mail and Bus圜al at all.