Changing the Administrator Password
Navigate to Settings > System Users.
From the list of system users, select the default
Click the button in the last column of the table.
The settings screen opens.
Enter a new Password.
Optional: Click Show Password if you want to display the password in plaintext.
The maximum password length is 72 characters. It may consist of alphanumeric characters and special characters.
Click SAVE to store the new administrator password.