Forum:Warning conserning a cardmarket user called heavywaterr

I want to leave this warning somewhere so that someone who might be the target of his scam attempts could find via google or something and use this post against him.

The above user bought gallis the star beast card from me, gave good reviews on it, then claimed that the card I sent him was painted(even though it wasn't). He sent me the below picture and claimed that the right card was the one I sent him. Then he tried to blackmail me by threatened to contact cardmarket staff about this and probably demand a refund. Haven't heard anything at leats not yet.