When they say the pirated version is not supported they likely mean they will not provide support to you when you have a problem with the mod if you're using a pirated version of the game.

When they say the mod will not work with the pirated version it likely actually doesn't work with the pirated version.

@racer-x Piration is a little more serious than violating the agreement to not reverse-engineer. Other than that thanks for the irrelevant rant that doesn't answer the question at all.