Help! I cannot translate the currency symbol "JPY" to Japanese in the confirmation a

As you can see the image attached to this message, the word "JPY" (there are 2) cannot be translated to the Japanese language in the appointment confirmation area.

As one of your staff members said, I tried to find its string in the editing page, but it was only for the currency setting in the back-end page. not for the confirmation area in the front page.

Could you help me solve this issue. Thanks.