Do you know those English language video lessons sketches? That people dub Oblivion music over? That's the level of acting in this movie. The main actor especially, speaks like a text-to-speech program and shows the same range of emotion.
The script and dialogue seems alright at first, but the cast has no chemistry at all. Then things take a nosedive - dialogue goes from weird to just disjointed in relation to what is happening - for example one hour into the movie they still deny anything supernatural.
The scares are the tired old loud noises and doors banging stuff. All the sets and props - house, office, hospital, outside shots - they looks so sterile, as if you are watching a commercial and not a real living and breathing world captured on camera.
The demon is just a copy-paste Creature of the Black Lagoon or Stranger Things season 4 type of deal. Of course done way,way cheaper and goofy looking. A demon from "Wish" as the kids say.
Overall a bad movie with no redeeming qualities. Can't kill time with it, can't enjoy it in a so-bad-it's-good kind of way either. Stay away no matter how desperate you think you are for a supernatural horror flick.