Large transaction stuck due to tainted coins

So i'm in the process of cashing out near enough $80k but my transaction got stuck and bank account frozen after 47% of my eth got flagged as coming from scam activities. I can't make sense of this situation, i dont know what triggered my coins to be flagged during AML reports as dirty. The exchange hasn't been much help either so i feel like my funds are stuck without further notice. i see this been happening a lot lately, what u guys this causes this?