Please check to see if the screws on the edge cover and strike plate are not interfering with the door/frame. Sometimes these screws are not tightened or need to be filed down to allow smooth operation. Please verify the strike plate isn’t mounted upside down. Furthermore, please check the gap between the door and door frame. The gap should be even, however, sometimes the gap is tight at the top or bottom causing the door to rub against the frame. Finally, check the underside of the door, in some cases the shipping/installation spacers are still on the door. These are plastic wedges and can be easily popped off.