To ensure service quality, the email addresses you register must comply with the international standard "RFC". Please keep the following points in mind when registering your email address:
- Use only alphanumeric characters.
- The only symbols that can be used are the dot ".", hyphen "-", and underscore "_"
- Symbols should not be used at the beginning of the email address or immediately before the @ symbol.
- Symbols cannot be used consecutively more than once.