At the top of the page above, click the "Login" button.
In the menu that pops up, click the "Members" item.
The login page should open up. It would look like the image below.
1. Enter your email as your username.
2. Click the "LOG IN" button.
3. The password field will appear.
4. Enter your password.
5. Click the "LOG IN" button again.
If you entered correct username and password, the following page should open up.