Hi @jennaovett , glad I could be of help!
When I head to that page and try to run the getCookie(name) function in the console it errors, it looks like you haven’t added that function to your JS yet.
You’ll want to add that first, you could use the function that is listed here if you did not want to create one from scratch: https://stackoverflow.com/questions/10730362/get-cookie-by-name
The _ga cookie is present, you can see all of the cookies by pressing F12 to open dev tools, head to the console tab > type document.cookie > it will show you the cookies on your browser currently
Once you add that getCookie function to your JS the addition to your embed code should start working!