Hello Boonyarit,
Thank you for contacting us.
I understand that you’re unable to purchase from the iTunes Store. I know how you would want this fixed in the soonest possible time. I assure you that I’ll provide the best information to help explain and address your concern.
I checked your account and I believe that your issue has been resolved. If you are still encountering the same issue, please send us a screenshot of the error and steps to reproduce the issue.
I hope everything goes well, Boonyarit. Have a great day!
Sincerely,