I'd be interested if anyone else has this as well. Up at Crystal Palace you now have to pay with the RingGo app. It should be free for an hour. I'm on Android and it comes up as free. My wife has an iPhone and it costs 20p every time. Same app, same location, same vehicle, same time. Obviously it's impossible to contact anyone about it and isn't worth the time for 20p but it makes no sense.