I'm currently running the demo, does the full version invoice print the customers email address and phone number?
*** Edited ***
Resolved, I was too hasty in posting this question.
<asp:Label ID="BillToEmail" runat="server" Text='<%#Eval("BillToEmail") %>'></asp:Label><br />
<asp:Label ID="BillToPhone" runat="server" Text='<%#Eval("BillToPhone") %>'></asp:Label>