Well I got scared when I read that it couldn't be removed. Nothing was wrong with mind when I installed it but just the fact that I couldn't remove it like the tempered glass made me un-easy until I installed the tempered glass screen over it and about eight hours later there were bubbles in the tempered glass that was probably do to thw liquid glass screen protector so I finally decided to pull the tempered glass screen protector back off to try and resection it and the liquid glass screen pilled right off with it just as easy as can be and my screen is perfectly find.
So I guess it can be removed and can be removed without damaging your actual phone screen. Who put the protector on your device?
The polymer coating buffs out as a clear coat. You virtually shouldn’t see it. When you say “messed up” like scratches or not evenly coated?? If they didn’t coat the phone evenly the only thing you could do add more and buff out the coating following the directions. But the coating should be reapplied at 11 months if you went with gadget guard but to remove it you might cause more problems like scratches or cracking the len with too much pressure. If the device is ghost touching itself. You may already need to send it in to Samsung for a manufacture defect if there is no physical damage, liquid (water type not the polymer coating, if you witnessed the coating of the device you would see it isn’t like water and doesn’t flow freely), or deep scratches in the lens.
What is the best way to clean your screen prior to installing a screen protector? I ask the question because I believe the cause of some rainbow effect may be a result of residual oil on the screen when the screen protector was installed.