Even though somehow sharing my book is good, I still feel like cheated on because I didn't know a whole hundred plus chapters of my book is published on other unknown sites despite crediting my pen name because I still prefer readers to read my book/works on my personal page.
Anyway, this was just me getting worried because I don't actually have the legal documents of copyright my book. And it's such a hassle to register it and quite expensive here in my country. 
I did try to contact the website, but no response until now and I didn't know where to report 