To be clear this is a Card-lock Operation, I am not a frequent user of this type of system. There are no staff around, so no assistance is available, the mini screen is difficult to see and read. They definitely could use better instructions, especially for not users. Also you are out in the elements, with only a small three sided enclosure. I managed to get the pump going, it filled my truck, I requested a receipt and it did not produce the receipt, why I do not know, this is a malfunction, I hate to drive or leave anywhere after making a purchase without my receipt. I took a picture of the pump and the mini screen. In conclusion I would like to add, I was very great full to get this fuel, I was on “E”. Colin