Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Download and run the Microsoft Office License Removal Tool for Mac. (This should remove activation and license caches, not your license.)
If you installed Word/Excel from the Mac app store, uninstall them, restart your Mac, and install them back from your Microsoft account page instead, sign in with the account that has the license.
Hope this helps! I'm hoping to hear back from you!
Best regards,
Nanta