I started this site with English then my client requested make the site in Korean as default. so I did it. but once then pages are not synchronized. I always have to get onto english admin dashboard to edit the translation.
Before your ticket is assigned to one of my colleagues, please allow me to walk you through some initial debugging steps. This will help speed up the support process.
For the pages in English that were created before you switched the default language to Korean, you need to continue referring to them as originals. This means that even though Korean is now the default language, if you want to change those old pages (pages that were created in English), you need to make the change in English and then update the translation into Korean.