to display the user name, you need to modify the authenticate user behavior to store the user name column in a session variable.
Double click the authenticate user server behavior on the third page of the wizard, you can select columns from the user table to store in session variables, select the user name column.
you can then find the binding in the session collection.
the profile and order details use the user ID session variable to determine the information to show, so you dont need any bindings, just add strait links to those pages.