Like a lot of people have indicated, the problem is probably due to the amount on the gas card. Let me explain. I've gotten a $50 "gift card" for Shell gas and the first time I used it to fill up, everything worked fine. The second time I used it, the pump stopped during the fill up and it wouldn't dispense anymore. When I thought about it, I realized that I had used up all the money on the gift card so the pump stopped. It wouldn't let me continue because I could have easily driven off with unpaid gas if it had continued pumping. I had to insert my credit card and start as a new transaction to continue my fill up. I highly suspect that is what happened to you. And if you think about it, it isn't Wawa's fault. It is theft prevention.
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