We are not able to cancel any sessions created or refund the fees you pay through ParkMobile. ParkMobile is merely a pass-through and tracking functionality for those funds; they go directly to the parking operator for your area. We don't have the access or ability to reverse or cancel transactions or to refund the fees the parking operator has collected.
If you feel you experienced a technical difficulty and would like to discuss your transaction to have us review for any possibility of a refund based on that reason, please open a support ticket here in the Help Center and we will respond ASAP. Otherwise, if you'd like to reach out to your parking operator to see if they are willing to accommodate your request, we encourage you to do so.