It appears that the site is seized by the US departments of justice. I doubt that you would be able to recover any of the stolen funds.
Their old domain is seized and also some user funds, like mine. I am in contact with the wex support, but all they do is telling me that they don't possess historical data on transactions and orders of the old platform. So they are not able to approve or deny my words.
Like others guessed, the coins are probably in the hands of the authorities because of money laundering and some users get screwed.