Oh shit, is this true?
It would seem to be fake though there are other sites that are also reporting this news. I hope he himself and the exchange will be safe, though it may just be an attempt to turn the exchange into a scam. Owner gets kidnapped, no-one knows where he is & the exchange turns into a scam and the owner can't take any responsibility.
However, I am probably wrong (I certainly hope so)
Once again, keep contacting them with via the online chat and don't be polite, rather angry. Hopefully then they will take appropriate action.