[Plugin: Post From Site] Nothing happens on Post

Hi, this is a great plugin but when a member clicks “Post” it posts, but nothing on the form changes and the entered content does not disappear so that my users continue clicking “Post” over and over.

I would greatly appreciate any help or advice you can offer with this problem. My website is http://www.bodyofgod.org/home

http://ww.wp.xz.cn/extend/plugins/post-from-site/