May we know what type of logo you prefer? An icon/image or logotype?
Is there a color preference?

I have submitted a few designs. Your feedback would be greatly appreciated to ensure the best design.

Thanks.

logo type

colour preferred is blue and grey

The design you've chose as a winner was the same with this:

http://www.letterlogos.com/logo.php?i=175

My concern is there might have other company already using your chosen logo.
I already report this possible copyright issue to DesignCrowd.
Unless, the winner on this contest and the buyer of the logo on other website is the same.
Then this is not an issue at all.

As a designer and part of DesignCrowd, we will continue to give and serve quality design to our customer.
Thank You Very Much.