Looks like you bought one of the lenses designed to glow around the edges - the only way to do this is to mill this edge. Otherwise you wouln't see much. Do you have backlit buttons? If not, there probably wasn't a good reason to order this one - the completely flat one would be fine - although you'll get some glow anyway.

But it has to be said, creating a publicly available web page for the sole purpose of criticising a product is not a good way to make friends.

(Edit) Unless that product is from Microsoft