I started having problems on the site, categories going to 404 pages, some pages not being able to be accessed after installing this plugin. After receiving many emails about this, I uninstalled and deleted the plugin and put the .htaccess back to a generic wordpress one. The site was accessible. But now, the login appears through wp-login, but it doesn't redirect to anywhere, and I am not logged on. I can't access wp-admin. I have tried both login and wp-login, admin and wp-admin. Even registering as a new user goes nowhere. When I try any of these, my browser screen is just white, does not go anywhere on my site. Basically my site is just sitting there. I tried restoring the backup I had taken before tweaking Better Security, but that is just MySql...lost just a couple posts, had nothing to do with the set up of the site.