This type of error indicates that the call back is missing some of the data. In the Live Chat > Website Integration settings, you'll find options available for configuring your live chat link. Can you confirm that you have created a unique live chat link, and the the Website Integration settings were modified before copying the website code?
Please also ensure that the integration code is placed right before the page's ending </body> tag. The smaller portion (<div id="stlivechat0"></div>) can be placed on any shared page within the website.
I didn't find an account for you in our customer database. Please reach out to our Sales Team by emailing sales @smartertools.com to get started with a 30 day trial of SmarterTrack. A trial license will allow you to test out the full functionality with as many agent accounts as you need. Once that correspondence has been started with the sales team, we can work with you directly to answer your questions and provide more information about the help desk software.