Hi, so I sold my NEW snap on LED sign I'd the buyer recived it yesterday, how ever he messaged me saying one of the letters is coming away. Now before I packed it up after testing and taking g pics of it I checked to make sure everything was ok, he likes the sign and is wanting any suggestions on how to fix it, he said he's worried that is he uses glue it will messing up. I mentioned about using liquid super glue. I'm not sure if the letters are silicone or frosted plastic, the pic where you can see the signs box underneath is mine. As you can see there's letter N is perfectly fine. The other pics are his. Can anyone tell me what the letters are made of (if you have one of these
