You should report to them the error you are experiencing :
(Status-Line) HTTP/1.1 406 Not Acceptable
See here :
Ask them to disable the rule(s) on the mod_security that blocks the request.
Your domain is protected by mod_security.
I believe that the reason is the value in the form data :
"Create Database ......"
The mod_security rule on Godaddy hosting is blocking the post believing that the value in form data is an attack with a sql injection ("create database").
As a proof of it, with google developers tools I've modified (on your website directly) the html value of the form data from "Create database including user management" to the string "test", and submitted the form, and I've been able to by-pass the mod_security check and create the database :-)
Try to click on your URL now....
(---> but then delete the database and recreate it, of course....)