Hi NTAI,
Thank you for reaching out to the Microsoft Community.
It sounds like you're having trouble activating your Microsoft Office package. However, the details were not comprehensive enough for us to better understand the situation. To assist you better, would you mind sending me some information :
- Which office product that the you bought, check it by go to My account ?
Picture for example:

- If you're using business license, please check or ask the admin to check if the service was enable or not by go to : admin.microsoft.com -> user-> active user -> license and app.

- Please check if the license was enable


- If the you has all of the above requirement checked, is there any error code ?
Could you please send a screenshot of the error or screen you're seeing? This would be greatly appreciated!
Thank you for your patience and understanding. We appreciate your continued trust.
Kind regards,
Clover-L – MSFT | Microsoft Community Support Specialist.