I just watched the first season (the seasons are separate stories). It was honestly kind of disappointing. Some parts where really dragged out, and especially with the cult gatherings they just made you sit through almost the exact same thing multiple times. Really just made me want to skip ahead. The ending, however, was incredible rushed. That easily could have been several episodes. The order of the epilogue also seemed a bit random here.

Most annoying I found the "miscommunications" I had with this show. It gave the impression like they where going to do something, for example: "oh they're going to try and escape". But then it would just cut to the next scene with them just sitting in their rooms as usual and it was like "oh I guess they meant later". They ended up in the right places eventually, but the road too it just felt very clumsy, and the characters decisions could feel quite random some times.

I found the first few episodes to be much more exiting than the rest of the show, which felt much more monotone. At the beginning there was just much more going on. All the characters had these little side stories going on that make a show feel fleshed out. Later on it was just purely the cult and showing over and over again how brainwashed everyone is.

I also found it a bit disappointing that they never really explained the backgrounds of 'the spiritual father' and apostle Jo. Their motivations and the relationship between them was left kind of vague and made the story feel incomplete.

That all being said, the show wasn't completely awful. It had its moments. Just don't expect too much from it.