do i have return mobo please help?

I'm guessing Amazon sold you an Open Box as new since all the accessories were included. You're likely ok to keep it as unless you videotaped opening the package and finding the motherboard box as it was, you cannot prove you received it in that condition. Since all the other components are there and in their original packaging, you should be ok.

-Wolf sends
 

there is a slight damage to the static bag and the box. Also i cannot find any warranty information in the box whatsoever
 


If it doesn't work, go and return the motherboard. If it works, you should have nothing to worry about.