It is necessary to update your account

It may be using your phone number if you set up the accounts. Make sure the right phone number is listed for your account and update it and other information if necessary. Let us know if that fixes it.

Thank you for the update and in this case, it would be best to reach out to Mojang so they can validate your in-game account as well as guide you with the necessary steps to perform.

Please check your console for any updates, it is necessary to have the console updated to update the games.

Then based on what you're telling me you should restart your console. Make any necessary updates and sign into the account on Xbox and you should have Xbox Live.

Thanks for the update.

Yes, in some cases is necessary to wait up to 48 hours to be reflected the purchase in your account and in-game

Would be great if you try waiting this time first