Multilingual support in account name

I am a member in South Korea.
I noticed that when I change the device language to English, My family name is different from my father.
I know this happens a lot in the case of changing Korean alphabet(Hangul) to roman alphabet, so I went to fix my family name in the church website.
However, the church account settings only receive one name, which I wrote it in Korean.
I couldn't find a way to fix it without changing the account name into alphabet, which would cause the tools to show my name in alphabet.
How can I fix it?

You'll have to work with your ward clerk. I'm not sure if they can fix that in LCR or if they'll have to talk to the GSD to get the latin names updated.