Hi, I use your plugin on many client sites. I hope many of them have upgraded to your premium version ;)
Anyways, I run a test site... and notice an undefined variable notice message on the login/logout page.
The error is as follows (very top-left of login/logout page):
Notice: Undefined variable: date in /xxx/public_html/wp-content/plugins/bulletproof-security/includes/login-security.php on line 22
I don't think it hinders performance or functionality at all... jut thought you might like to be aware.
Awesome plugin... and thank you!