Re: Don't buy this screen protector!
Considering that of the 11 reviews on Amazon at the link you provided, 9 were 5 stars, 1 was 4 stars that didn't actually say anything negative whatsoever, and only 1 was 1 star (where the cited issue was that the screen protector was causing the display to intermittently black out, which is not something a piece of plastic could do), I'd suggest that perhaps you simply got a defective or damaged product. Have you tried contacting the vendor to give them an opportunity to replace it?
Edit: As of a moment ago, there are now two 1-star reviews - I'm guessing you just posted yours? If so, from your review: "The package was wet, wrinkled, and folded in 3 parts like a piece of paper." Don't blame the vendor or the product for poor handling by the parcel delivery service.