umm, i don't think FTP is allowed via the browser. just HTTP and HTTPS. if its an FTP thats accessed via HTTP, then i would think the password not being allowed would be the issue. if you're typically prompted with an htaccess-type password (pop-up asking for username/password), then you can try putting in http://username:email@example.com
and it may let you in (this would be a huge security risk, as your password would now be stored in your browser history).