can you ask what they platform they prefer? sending video through intercom or youtube link.
To be honest it is hard to believe when they not straight banning people who headshot you from 400+ meters with video evidence. Because the eu privacy law you talking about, i often saving steam account link to see if they got new game ban on their profile or not and yet some cases obvious one they still not.
Don't get me wrong hunt cs team is really good at their job from my experience playing multiplayer fps on asia server. So i know the worst possible case from asia player culture (specifically china).