I have never had an issue that was not any fault of mine. For instance, I parked in a space thinking that it would allow for time extensions. If I had read, I would have known that not all zones, like some in center city, allow for the time to be extended. Do the extra fees suck? Yes... but the app allows me to extend and end my time as needed and the fee beats a $51 parking ticket for an expired meter 🤷🏽♀️