If you used PP then you probably order through his site and should have an account and all thus what message/thank you were u expecting?  PMs and email depends on how long you gave him(and probably what email you sent to).  Especially considering right now he is concentrated on his main work plus getting these out as he gets them and trying to organize the refund for those that ordered before price drops. 

Basically not every pre-order etc is BFL so people relax :-)