I downloaded Microsoft Word as I said. It down loaded SUCCESSFULLY.
The problem was at the automatic renewal stage after this, it would not work There was no way of getting round this.
There is an official statement from Microsoft acknowledging a problem of licensing word for 365 for Mac. I discovered it after days of troubleshooting.
The remedy suggested was to run a license removal tool, full instructions given. That did not work.
There are nunerous suggestions online as to how to solve the problem. I tried a lot, no joy.
It is incorrect that Microsoft has withdrawn support for 166.114 because I now have the office suite via Apple , straightforward and all working fine . It has appeared on my Microsoft order page, with one month free, along with the defunct Word 365 Home and Student.
@Laraine Goddard
I'm glad you have been able to fix the problem you encountered. Thanks for the follow-up.
However, note that if you are saying that you (now) have a subscription version, you won't be affected by the Office 2021 licensing issue at all.
There might be other challenges with licensing, depending on which combination of Office and macOS version you have. Generally, there are more restrictions for Mac users than for Windows users, unfortunately.