Community - the 4.0 BTC listing fee for C-CEX was paid  on 10/25 as shown here: https://blockchain.info/tx/dade33f04eed0a1c6f746cae7abd41a73fcc0944686af16515773a15214ee60f
Or please sign-up with an account on c-cex.com and create a support ticket, or both tweet and support ticket.