I joined this forum just to say I am experiencing the same problem.
It ruins the clarity of the screen and leaves a pixelated effect making the screen useless. It also uses a thicker material for which I assume is the non-existant anti-glare.
I was also somewhat annoyed that it actually didn't cover the whole phone.
I would try to return but its not worth the hassle.
If anyone knows a brand that protects the whole screen and makes the phone usable please pass the name along.