I was looking for simple legal explanations.
I
eventually found https://gram-news.com.ua/naslidky-neyavky-v-sud-st-268-kupap-shho-potribno-znaty-shhob-unyknuty-problem/
online.
It was hard to find clear info. Most sources were outdated.
Very useful explanation of Article 268.
On this site I found simple guides.
Very informative if you need info on Ukrainian law.