The real name differs from the name on the account I want to register.

If your real name and the name on your K-Bank account are different, K-Bank account verification is not possible.
Real name, Upbit account name, and K Bank real name verification deposit/withdrawal account name must be the same to authenticate real name verification deposit/withdrawal account.

If there is a change in your personal information, such as a name change or date of birth, please match the information and then attempt authentication.