The movie is just kind of stupid a lot of the time.
The rules in this movie change so much, first nobody knows Evan changed, and he can't remember the new world, then the prisoner notices the wounds in his hands appear (which disappear for the rest of the movie), then Evan remembers the changed world, but the new memories don't alter his personality at all.
Also, the father was always lamenting his "family curse" but attempts to have 3 kids. Kind of a silly thing to do.
Also you don't get sent to federal prison as you await a trial, you either wait on bail or (if you are a risk of skipping the trial) in minimum security county jail.
Also, every time Evan goes back in time to fix something, he fucks up the moments he has. Like standing next to the mailbox he knew would blow up, or lighting a bomb that he knows has a 3 second fuse. This isn't "going back always makes things worse", this is going back and making things worse then. Think of how badass the universe would have been that he stopped the bomb from killing the kid, but also didn't needlessly destroy himself.
Also, in the final timeline where he was in the looney bin, why did the doctor dismiss his ideas about different universes, something that shouldn't have been experienced by the Even in the that timeline until just then.
Also why did Even go back to his classroom and draw a picture of a knife murder? Just for consistency? That isn't as important when he stabs himself in the hands seconds later.
All of these complaints are with the script and story, and they are a little nitpicky. Everything else in the movie is ok (actors, visuals, ect). The story is just lacking.