Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Sorry to hear that you’re having trouble with this situation. First, sign in at the following link and confirm that the subscription appears as active under that Microsoft account:
https://account.microsoft.com/services
If the subscription is active, run the Office License Removal Tool provided here:
After removing the license files, reopen an Office application and try to activate it again using the Microsoft account associated with the subscription.
If activation still fails, please share a screenshot of the complete error message, making sure to hide any personal information. I’ll be waiting for the results so I can continue helping you.