Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello
Is this a renewal or a first time purchase?
If it is a renewal, any chance you purchased it in a different country back then? Or it was purchased from a third party? If so, let it expire first. Then sign up a brand new one.
You might also want to check your profile https://account.live.com > Your info, make sure the country in your profile matches your billing address for the payment method you want to use.
If it still gives you difficulty, contact billing support.
To get help, open the "Get Help" app on your computer (just search for it in the Start menu). or 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.