Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Sorry to hear that Microsoft 365 is still asking you to renew even though you have already paid. To better understand the situation, could you please sign in at https://account.microsoft.com/services using the Microsoft account associated with the purchase and let us know what subscription is shown there, including whether it appears as Active and its expiration or renewal date? Please do not share your email address, product key, order number, or any other personal information.
Also, please check https://account.microsoft.com/billing/orders and confirm whether the renewal payment appears there as Completed. If the subscription shows as active online, please let us know exactly where you are seeing the message asking you to pay again—for example, inside Word or Excel, during installation, or on a Microsoft webpage—and share the exact message or a screenshot with any personal information hidden.