This is the first full release of NARC.
The AutoEncoder and ML Technologies are not guaranteed to find all cheaters, and there is always a chance of tagging people who did not cheat (especially in circumstances where there was not any cheaters whatsoever). However, the option to turn off those features and simply look at people who left the page is there, as well as viewing the original data set to decide for yourself.
There is a video tutorial on the subject here:
https://www.youtube.com/watch?v=vO6ZXhmYPuk