Display custom text (or links) on the admin login screen.
Go to Settings » Add Login Text and enter the text you want to see on the login screen. Make sure the "enabled" checkbox is checked.
Are you using another plugin that is also trying to edit the login screen?
Are you using any CSS that might be hiding parts of the login screen?
Are you caching your admin pages?
The output is wrapped in div tags with class name "alt-login-text". Use this class in your local stylesheet to style the output how you want.
Add this to your functions.php: