I was pretty gripped by this, having just binge-watched the last two episodes. There were times when I didn't really know what was going on, and times when I wanted to say, No, don't go into the woods AGAIN, in the dark, just don't! But I found the characters engaging and eccentric (I'm officially in love with Viveca) and there was enough of a cliff-hanger at the end of each episode to make me impatient for the next one. And ultimately, it doesn't matter whether you buy into other-worldly stuff or not - it can be complete tosh, like this probably was (see also: Stranger Things), but if you're enjoying it, why the hell not?
I fail to understand why our two Scandinavian friends are so vehement in their dislike - I got the echoes of Twin Peaks and Stephen King, but so what? It's all out there. And I thoroughly enjoyed it - and they're probably less enchanted by hearing Swedish spoken than I am.