I'm sorry but this sucks, every aspect of this is just lazy and uninspired.
Its an ok idea done terribly; student-filmy basic-coverage handheld cinematography, a ridiculously repetitive tone-deaf score, cheap scares, stiff performances and artificial direction all at a painful dawdling pace.
I don't understand what people see in this bore.
I'm glad the Duffer Brothers later did the concept justice.