It is true that Autoland systems in modern airplanes will reliably guide the airplane to the proper touchdown point.
However, any mechanical or electrical device can fail. Given the airplane type, it is entirely possible that the ILS and/or autopilot system were inoperative or malfunctioning.
Another possibility is that the airplane was held at higher altitude by ATC until too close to the airport, and they could not get down in time. There are many other possible scenarios...