Here you can read more about the “marketplace updating topic” -> https://forums.unrealengine/showthread.php?85688-Why-is-most-of-the-stuff-in-the-marketplace-not-compatible-with-unreal-engine-4-9 
Here you can read more about the “marketplace updating topic” -> https://forums.unrealengine/showthread.php?85688-Why-is-most-of-the-stuff-in-the-marketplace-not-compatible-with-unreal-engine-4-9