What a joke. The first transaction went well. Had to provide a receipt. Transactions afterward, unless the app requested a receipt, all went unpaid. The reason they all went unpaid was that they could not verify transaction from "partner". Either the partner does not want to report or get upside does not want to pay. AND, all the stations in my area that I have found that the app requires a pic of receipt only have 1cent back. Not worth time. Sent a e-mail to "help desk" no help don't waste tim