No such thing as a closed runway in Infinite Flight. There are red, yellow, and green runways. These change based on wind conditions. It is totally alright to land on a red runway. Usually the winds are the same on the red as the green. Its never been a problem for me. I can’t even count how many times IFATC has instructed me to land on a red runway. It doesn’t matter and usually isn’t that much of a change from runway the game deems active. If it were me, I wouldn’t report him. In the end, it’s the Training Server. Who cares. If this happened on Expert, it would cause for a much greater concern.