I have no idea why this film is getting so much hate. It was a decent horror film. The investigative/mystery plotline was good, and so was the acting.
When it comes to the horror itself, the jump scares were scary, but the main issue was the antagonist of the film. Bathsheba and the Nun from the first 2 movies were really creepy and kept me thinking about them for a while, but the Satanist and other demons in this film weren't really that scary at all.
Overall, it's a good watch.