There's a bunch of caching and whatnot that browsers do now, you may need to have your browser forget the site then try again after adding it. In Firefox for e

There's a bunch of caching and whatnot that browsers do now, you may need to have your browser forget the site then try again after adding it. In Firefox for example you can right click a site in history and click "Forget this site" which will reset all of the caches that keeps it working