Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Good Day Emanuel_33,
My name is Carlo, I am also using Office 365 and community member like you.
Let us work together to sort this out.
First, can you please check the expiration date of your subscription, go to this link below and sign in using the email address associated with your account.
https://www.office.com/myaccount
Once you signed in , check the expiration date.
If your subscription is not yet expired in that account, open the word application and check if the email address that is currently signed in in the Office word is the same as the one that is associated with your Office 365 subscription account.
Make sure that they are the same.
I hope the information above helps. Please let me know how it goes.
Have a wonderful day ahead and stay safe.
Sincerely,
Carlo T.