Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Greetings!
This is Tin, I'll do my best to help. Kindly try to sign in your account here: https://account.microsoft.com/services.
Please check if you will see your subscription as active from there and if it is showing Past due, please choose Pay Now. In case it still showing pass due even if you believe that you already paid for it. It will be best to reach MS Accounts & Billing support to correct this.
Kindly open this link: https://support.microsoft.com/contactus/
Please sign in your account with the subscription, then click Microsoft 365 then choose Get Home Support. After that, please type Chat with an agent then hit enter. Scroll down and choose Contact Support, then please select MS 365 and Office then under Category, choose Billing and Account Profile question then hit next. You will see the chat option there.
Once you're connected to the Live Agent, please let them know about your issue so they could check your account and address your concern.
Thank you,
Christine L