Hi
On the payment information is there is a Add Comments About Your Order block. The problem not all the customers see it as we run only a COD or pay with bank card (we have a mobile card machine) and want the customer to specify if we must send change on the COD or send the card machine. I can only add a block that send an email on the create form. it is not included in the invoice like when you add a comment on the payment page.