OK, I discovered that is something related to jquery. My template for some reason didn't load jquery by deafult.
The coockie plugin said: Developer: Caution! In order to use Cookie Consent, you need to use jQuery 1.4.4 or higher.
I also had some problem with an animation which needed jquery.
So I added this line in public_html/templates/gk_steakhouse/layouts/blocks/head.php(line 93):
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
The COOKIE CONSENT and MY ANIMATION begin to work. The problem is that FABRIK SUBMISSION didn't work.
IF i delete the jquery script in head.php the form submission work and COOKIE consent and my animation not.
How can satisfy both?