Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I am afraid you would have to give us more information before any solutions can be provided.
How did you update it - via the Office apps > Files > Accounts > Update license?
You said it wouldn't let you - what's the specific behavior, or error message, what does it say to be exact?
What license do you have? If you go to https://account.live.com > Subscriptions, what's the full name of the subscription, or are you using a perpetual one-time purchased license? If so, what's the full name, such as Office Home 2024, or something else?