Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
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 recognised correctly.
2
If not, in Word, go to File - Account.
Click the Switch Licence button, are you able to find your new Microsoft 365 subscription lsited there?
3
If not, log into your Microsoft account on this link, check the expiry date listed on your subscription, is that listed correctly for your new subscription.
https://account.microsoft.com/services/
If not, go to the Payments and Billing section, is it indicated your payment has been processed correctly.