1. On the checkout page, click Search.
2. In the address field just write the last part of your address (In Korean) and click 검색
E.g. 서울특별시 용산구 이태원동 137-67 --------------> 이태원동 137-67
OR
E.g. 서울특별시 용산구 우사단로36 --------------> 우사단로36
3. Choose your correct address and it will be automatically added.