Using MB profile and the "lost password" link leads to the"?lost-password=true" endpoint. But the page's strings do not follow the current language(Korean). It seems to me that the strings are from the WP core, aren't they? Can you guys check out if it's working properly? It is showing English, now.
All texts of the extension are ready translation, you can use the plugin Loco Translate to translate the text on the page lost password to the Korean language.
When translating the text, remember click button Sync and Save to get the new translatable text, see my screenshot https://share.getcloudapp.com/nOu8qrvX.
If you are using MB AIO, you can use the plugin WPML to translate the text. It can help you to scan all texts inside a plugin, see my screenshot https://share.getcloudapp.com/Kouqg29o.
Please update the new version of MB AIO to v1.11.12 to get support for Loco Translate to translate all extensions inside MB AIO. Going to Admin dashboard -> Loco Translate -> Plugins -> Meta Box AIO then you can see extensions' translation ready. https://share.getcloudapp.com/d5uW4m4B
.
