Unavailable account name

If the system indicates that the newly set account name is invalid, please check the following:

1. The account name must be 2-15 characters long, comprised of lowercase letters or numbers. It cannot start with a number or contain symbols.
2. If the account name already exists, please try a different one.
3. account names from deleted accounts cannot be reused.

Web—add, hide and delete subaccount

App—add, hide and delete subaccount