Thank you for replying.

But unfortunately it seems like that this is not a payment problem.  Maybe my question is that how to buy the download map from outside of Tom Tom supported countries (45 countries, listed on the select country Flags).  I can create the My Tom Tom account with my Japanese e-mail address. But when I purchase the map, it is not possible to proceed beyond the sign-in step because of e-mail address. If you have any idea to solve the problem, could you please let me know. Thank you. The error message is following;

• There is no MyTomTom account found with this e-mail address or password.
  However XXXX@XX.jp is registered in JP. You can go back to the homepage of your country, or create a new account with a different e-mail address for the current site.