So I spent $40 just over a week ago to get my Belkin Invisiglass installed at the Apple Store and it's already ruined. I was out shopping my phone was in my front pocket. I pulled it out to do something and saw the screen was lifting big time below and to the side of the home button. Upon closer inspection that corner down there was chipped ever so slightly causing the lift. I have no clue how it happened and don't remember bumping into anything but that's $40 down the drain.
Return it! I returned the one I purchased and had installed by the Apple Store. 0 questions asked.
After much thought, I think I'm going to go without a glass screen protector. Apple Care + replacement is only $30 this time around.