The close-up of Autumn when Skylar and Jasper leave her to go to the ATM shows no nose stud, nor piercing hole, anywhere.
At 1:22:36, broken trolley bag handle repaired automatically.
When Skylar goes out to collect cash from the ATM, Autumn finds her later inside the station. Finding someone at a random place in a subway is almost impossible.
Early in the film, Autumn splashes a glass of water on a rude young man. He flinches and closes his eyes before the water is splashed on him.
At around 1:33:51, a person emerges from a corridor and looks both ways until he sees the camera and immediately moves back so as not to be seen.