Hi
As far as I'm aware you cant mine FTC or any scrypt based coin at ghash.io
It is BTC only but please correct me if I'm wrong.
did you sign up to CEX?
https://cex.io/r/0/efc17/0/when mining BTC you then have to sign in to ghash.io and follow the setup to point you miner there.
For FTC you need a FTC pool.
Sorry if I have misunderstood your questions. Posting further details such as mining software and address and port details might help.
Cheers
you miss understood a bit
bitburner for cex.io (the pool is atually ghash.io)
and the gpus for FTC....
if you where on windows id easily be able to help but for Linux im lucky if i can remember how to log in XD
PM me if you want to install windows 7
im more than happy to help out