ORTP-REANIMATED (nur Echt in 32 Farben)

[Nagasaki]

No, you are not allowed to use it that way. At least one of the contributors is against it. He explicitly mentioned raising funds by showcasing a project using the assets. This includes Kickstarter. He even goes so far to say, no money is to be involved in any way- at all. Not even a single penny.
The people behind it are aware for this to be an issue, but because of its nature of being a group effort (e.g. multiple people working on the same piece of tile), it will most likely never be resolved. Just forget about it.