I'm in New Zealand in case that matters. The interface is horrendous - and it has numerous checks it requires before you are allowed to pay and each step takes a long time to accept, and it hates "fill" as an option (rather than say $50) - Do you have any discount receipts (from supermarkets)? Have you an AA card? Do you authorise payment up to X? Are you sure? Hold being placed... Waiting to process.... If you pick up the pump at any stage before it's ready it all breaks.