When you have the member-account, please login by that account. You will be authorized to start to work for it.
Go to your website, there is the horizontal menu-link at the top, click the staff
then you will find the green part below, it is the member login area (in chinese 會員登入)
匿名 (username) 密碼 (password) with two buttons below one is 進入(Enter) another one is 登出(logout)
after you pushing the button 進入(Enter), it will show you some text-words there for seconds, it means 'the system is indentifing your accounts...pass or not', if you passed, you are reconized with the ID and be authorized. Then it will direct you to the member's addressbook.