Can't see anything in your pics. If there are fluid-filled bubbles with nothing else in there, they should go away in a couple days. If there are small specks in the center, that's dirt or dust and it may get better but won't go away.
The corners look manually (& not well) cut. Also, in your first photo, it almost appears like the bottom edge of the film is above the weather stripping. If so, then that is definitely a bad install!! The installer should have tucked the film below the weather stripping so that you cannot see the bottom edge of the film.
Looks like I installed it. You should take it back. If they hand cut, he should of rolled/file the edges and not cut to fit. Really poor cutting skills. If he can't do it, ask for your money and go else where, however do allow them a chance to make it right.