New IPad 12.9 5th, screen defect I am pretty sure its the glue

I just bought it from spectrum mobile, and they told me to ask apple. Apple told me spectrum should replace it since its a day old, but spectrum wants to blame fedex which didn’t do anything, just a nightmare with spectrum. Anyways how difficult do you guys think it would be to fix that defect in the top right. It looks to me like air got trapped in there, or the glue didn’t seal properly. Thanks for any help on the subject.