Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
1
Open Word.
At the top right of Word, log out of Office.
Restart (not shut down) your PC, then log back into Office, is your subscription then recognized correctly.
2
If not, open Word again, go to File - Account, click the 'Update Licence' button to try to resolve the problem with that function.
3
If not, log into your Microsoft account on this link, check the expiry date listed on your subscription, is that listed correctly.