Passing contact ID in custom HTML block

Hi, We had added a HTML block to the footer of our emails to include a link to our email preference center. The code works in that it links to the Infusionsoft landing page that contains our preference centre and it looks the way we want it to (smaller, lighter text that the main email). But the contact information is not being passed to the landing page fields the way it does if we include the link in the main email text box.

Does anyone have the code to pass the contact information to the page?