You spell "conversion" incorrectly in two different ways and your grammar is poor ("Why noone...").
If I were you I'd get the site redesigned, preferably by a professional web designer.
Maybe slim the main page down to your banner, a tag-line saying what the product is and a "Try It Now" button. I don't want to sign up for anything; why not let me demo it on your site in real-time?
And where's the initial Wow? There's a heatmap picture on the main page but nothing happens when I click it. Why not have the image work as a heatmap too?
Sorry to be so negative, but maybe you'll get better results if you fix some or all of those things?