I do prefer also to credit as much as I can as a way to thank the creators of the content.
But if it is more safe not to credit… I guess I will go with that for the next time, and avoid headaches, about some specific rules like the one for Paragon, and sure, my bad for not understanding well Wraith asset license that I read at some point. Is hard as an artist to understand well all this licensing rights 
Thanks for the Link and for your patience