The administrator name and password have rules as shown below.
■ User name
(1) Enter 4 - 32 alphanumeric characters for the administrator name.
(2) Spaces between characters cannot be used.
(3) Accented alphabetic characters by language and all symbols cannot be set.

■ Password
(1) Enter 8 - 32 alphanumeric characters and special character for the password.
(2) Spaces between characters cannot be used.
(3) Set a password that includes three of the following four character types.
　　　Upper-case alphabet character
　　　Lower-case alphabet character
　　　Number
　　　Special character(!#$%’()-=^~¥|@`[]{}+*,.<>/?_)
(4) ”&:; and a space is unavailable.
(5) A password consists of the same character string as “user name” is unavailable.
　　　Example) User name: Admin
　　　　　　Password: 123Admin456, 123456Admin, Admin123456 (cannot be set) 　　　　　　　　　
　　　　　　123ADMIN!!! (can be set)

The above information is also available from the ASM300 Operating instructions.
WV-ASM300 | i-PRO Products
　　　title:WV-ASM300 Operating Instructions
　　　2.3.1.2 Registration of the administrator account when launching the first time