I sent an e-mail, but didn't get a reply.

Inquiries sent by users will be checked and answered by each person in charge in the order of receipt. 

It takes an average of 2~5 days to check and answer your e-mail. 

However, it may take some additional time if your inquiry requires further review. 

If you continue to inquire about the same content, response may be delayed due to a change in reception. 

We kindly ask for your patience and understanding, as we are doing our best to provide the quickest and most accurate guidance.