How can we confirm our website is using Zen?

We are in the process of web development and are unclear about whether the website we are having built is using Zen-cart. I cant find any indication that it is built with zen-cart when I inspect elements of the webpage. That, and the admin back-end is completely different from how I remember an older version of zen-cart admin looking. We paid for a site built using Zen-cart. How can we confirm this? Thanks for your help.

Here is the ip.address -

http://52.54.42.5:8155/

No, it is not using Zen Cart.

You're right: usually in some of the page's HTML "meta" headers you'd see something about Zen Cart.

It's possible you might find more details in the admin pages' HTML to find clues about what software it is using.
You might find that it's a homegrown CMS/something built by whoever "built" your site or is currently hosting it.

Thank you for confirming that.

This looks like custom code to me. Most packaged commerce applications use some kind of prefix in their javascript or functions that are called and in some of the div id and class blocks that give away what script it is. Plus unless you buy a brand-free license, most scripts you have to display the powered by line. Open the php files in a text editor. The first 10-20 lines or so are usually part of a comments block that gives the script type away.