A review of our payment system indicates payments respectively (@3:59-$.50 for 18 min of time) and (@4:55-$.25 for 5.25 min of time). The last payment would have maxed out the pay-station and if a payment was rendered at 4:55, there would have still been time already on the space. We cannot locate any other attempt to pay nor does the “heart beat” of the pay station indicate a problem. We cannot rule out a technical difficulty but it seems to have self-corrected as the last payment was noted at 4:55 pm.