Perhaps you can clarify which page you’re referring to as the “tracking page”? Keep in mind, If the page is hosted outside of Klaviyo (i.e. a page containing a Shopify URL, which may be the result of a re-direct from a Klaviyo order or shipping confirmation email) we won’t be able to modify the content of that page.
Klaviyo can only populate order information (item price, name, quantity etc.) through a dynamic block if that information is contained in a Klaviyo email.