1.'Name' not mean 'write your real name.' It means please write 'NickName'. (If you write your real name, You can't level up.)
1-1. Nickname must not include special letters, consonant, vowel. And misinterpretable nickname like about JB or member of GOT7 are prohibit.
2.In ‘자기소개’ section, introduce yourself or write about JB. After check here, You can level up.