When Cooper creates the fake profile, there are back and forth shots of him and his laptop. In one of the shots of his face, the make-up for the black eye is on the left side of his face instead of the right side, where it's supposed to be and is in every other shot of him.
When Cooper sees a picture of Brianna and Nick, he refers to Nick as Melissa's Nick. Melissa Archer is the name of the actress playing his sister Christina.