It's just a really bad and really boring movie. The first movie isn't great but it commits the concept is overall pretty disgusting. If you're looking for a gross and shocking movie, it'll definitely do the trick.
This one seems to give up on the concept fairly early on. A lot of the movie is spent doing fairly mundane things. There's very little romance with corpses or even corpses in general. There's a few gross out parts but they're pretty isolated and not that bad. I could forgive this if the movie was doing something else—something meaningful or interesting. But it all feels like a big waste of time, like they lured you in with the title and now you've got a bait and switch. And worst of all is really tame compared to the first one. It really makes you wonder what happened.