I had an address for my btc account but I am not found yet the other addresses exist the problem is that I sent 0.004 btc to this address
So I filed this address in several faucets that cumulate the btc and which requires not to change address how to do
I am not sure what you said clearly but after looking those screen shots i think you have sent btc to the older address you got from c-cex and you didn't get funds because address got expired before you have even sent to that address.
I think you should contact the support of c-cex and tell them what happened I think there's a 60% chance you will get your funds credited to your account.
The only thing he can do is create a support ticket and I'm sure that C-CEX will accept this because their reset of BTC address is not announce officially on their site a week before it is done.