@charleyhorse97
You need to stop listing the name of the MSC with the client. The mods will start deleting your posts and, eventually, remove you from the forum. I anticipate that both your posts will be deleted before long as it is.
Yes, you need to pay at the pump. The only exception is if the pump payment system does not work. The form has a place where you can comment on any reason you could not follow all the guidelines and you would simply state: "The payment option at the pump was broken and a sign directed me to pay inside." You could take a picture of any such signage, just in case.
Hard work builds character and homework is good for your soul.