Help with HARD REJECTION of ICONS set


#1

Hello everybody,
would someone give me advice here why my simple icons set was rejected?
I did all the icons very precisely, in all kinds of sizes and file formats to be used for different purposes. I even made bonus for the person that will purchase my set.
What do you think its wrong?
I know it might be originality, but sometimes people look for very simple thing - thats the purpose.

Thank you,
Alena