A family of Microsoft word processing software products for creating web, email, and print documents.
Your subscription allows you to activate an older version that will run on your Mac. Here's my article on how to download, install and activate Office: Most Recent Office You Can Run - Best Practices
After installing 16.88, run Help>Check for Updates one time to update to the final 16.88.1 version for Outlook and PowerPoint. You don't need the AutoUpdate option to automatically update Office, as there will not be any further updates for your version.