Make sure the ftp account you're using is dropping the file in the root web folder (sometimes it's WWW or wwwroot, etc.). Sometimes when logged into FTP they'll drop you one level up and you have to add that extra web folder to go down where you want. That's why the game has fields specifically for the ftp server folder.
Your remote directory could be /wwwroot/league and your web root could be
http://theibl.org/league/