I just had on order cancelled by a buyer who requested a change because I didn't place an element in my model. The thing is that element is useless in the model, it can be without it and is actually more efficient without it. Then the buyer cancelled the order not before telling me that the model was wrong because of the aforementioned reasons and then blocked me.
Even though I know he will feel stupid when he realizes that the model is actually correct, the one who feels like an imbecile is me because I have been scammed.
That user is "ajkoprd" by the way. If someone sees him, run away. I wish I could finish a not so kind conversation with that buyer but unfortunately I'm just too nice for my own good.
