The 403 is a response to a direct request for a directory and is caused by the Options -Index settings in your .htaccess file. I believe it's working the way it's supposed to, because in this case, I suspect that the /wp-admin directory doesn't exist in your root domain.
You don't appear to have a wordpress site at fevershoes.com, however
there is a WordPress site at fevershoes.com/test/
Try fevershoes.com/test/wp-admin