i'm not entirely sure, but i know that there's been a huge issue with wedbcomic authors and lezhin, regrading the authors' pay, days off and tax or something.
lezhin has been paying some authors really late. like years late.
also, lezhin has basically stopped some webcomics from being viewed by removing them from featured even after the author came back from a hiatus, like eun song's comic 'reversi'.
also, i think that authors have to submit their comics at least two days before the release dates, and when they submitted it only slightly late, but still before the release date, lezhin didn't pay the authors...? i'm not too sure about this one.
and some authors who asked for time off because they developed freaking TUMORS have been denied that by lezhin and so the authors have left.
in conclusion, lezhin is REALLY shady right now.
here's some websites which are more in detail:
http://porifra.tumblr.com/post/168424485685/rough-summary-on-events-leading-to-lezhin-tax
https://social.lezhin.com/2018/01/30/lezhin-comics-statement-concerning-recent-allegations/
I mean, I'm as disappointed as everyone that Sadistic Beauty is being discontinued, but I can understand why the author did this, with Lezhin being messed up and all.