Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello, good day and thanks for your question. To add to the above which is inclined on the business side, if your card is up to date and you have also verified that it is working for other purchase that you made online, please check and try this on a different browser or by using inPrivate or Incognito browsing and another alternative is to link your card to PayPal and use it as payment method. If you will still encounter an issue even after trying out the alternatives, you can reach out to the support team at https://support.microsoft.com/en-us/contactus/ and then click on Microsoft 365 and then click Get Home Support and then type in Billing question and click the blue button that says Sign in to contact Support and login and proceed from there. Kindly take note that the forum does not have access to user accounts to be able to check and intervene with account related and billing side of things.