Hey KimmyJongCoon, thanks for reaching out and I am sorry to hear about the issue you're having.
After having a closer look, I can see that you have managed to purchase credits therefore I do believe issue is now resolved, however should you continue to be facing the problem, get back to us and we will look into the matter further!
After having a closer look, I can see that you have managed to purchase credits therefore I do believe issue is now resolved, however should you continue to be facing the problem, get back to us and we will look into the matter further!