Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Can you go to https://account.live.com > Your info, make sure the language field is not blank or incorrect. Make sure you have it set up to the correct language. Review your country and region as well. Make sure they are correct. Then update your billing address again, and see if that helps.
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If it still doesn't work, some common problems that can cause this issue:
Your subscription was originally signed up in a different country, and it doesn't match the country that's currently in your account profile, or it doesn't match the credit card's billing address country. Or the subscription was redeemed from a third party retailer.
If that is the case, you need to let this current subscription expire. Then sign up for a plan again, not renewing.
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If none of the above is your scenario, then you need to contact support.
Go to https://support.microsoft.com/contactus, Type "Billing" and press Enter. On the next screen, click "Contact support" at the bottom of the page, then choose "Microsoft 365" > "Manage my subscription". You’ll then see the option to chat with a Microsoft support agent who has access to your account to help review the issue.
You can reference this detail step by step instruction with screenshots I posted in this thread: https://learn.microsoft.com/en-us/answers/c/2714817