this because of the way forms work.
When a form is submitted, the form information is available only to the form action page.
Since you are using universal email to send the information, then forwad to another page, the form information cannot be used on the second page, it is destroyed once the action page is finished processing.
You need to use the Cookies Toolkit Set Session Value behavior on the same page as universal email to create a session variable from each from element, on the second page, you can reference the session variables.
To create the set session value behavior, go to the Server Behaviors panel, click the plus button and select WA Cookies Toolkit -> Set Session Value. For the trigger select "Any Form Post. For the value, click the lightning bolt and select a form element. Set the name to the same as the selected form element.
repeat this for each form element you wish to use on the second page.
