Go to official website, then enter your email address in that box, click Send, and the system will automatically send an email to your email address. Then there will be a login password given by the system. Enter your email address, see the password, and then return to official website. Enter your password in the box at the bottom of the screen again, and you can officially enter the page. You will see a box at the top of the screen, enter your reward password, and then click the round button. That's enough.