Ok, so in that screenshot. Is that your personal fldc wallet address? Or is that the bittrex btc address?It shows that I have 266,855.94811112 FLDC in my wallet and yes it is a Bittrex Bitcoin wallet.
I don't see how bittrex can recover any coins sent to the wrong address as they don't have some sort of magic backend into the blockchain....
If you send to the wrong address, and the coins don't use like adressess (btc and zcash for example) you'll hopefully get a invalid address error and not loose coins.
That said, btc address are sha256 and I believe so are fldc.., so you may have sent your fldc to a wallet controlled by someone else, or no one.
I would paste the btc address you sent the fldc to into the counterparty block explorer (or fldc block explorer if one exists.., though I doubt it) and see if your funds are there.
If they are, you are sol..., pretty much you are sol, unless you somehow sent funds to an address bittrex controls.., which would be very lucky.
I really think the way they set this stuff up is pretty stupid. You should not have to have a separate wallet for every single coin, you should have 1 wallet 1 address that can hold whatever coin you put in it.
Is your personal fldc address 1HLrk2pLyWhD2qRrRG2k31TRPJYidXJjqZ?
If so. What you've done is really sent those 200thousand fldc to a fldc address that is the same as that bittrex btc address.. Bittrex may or may not be able to help.
Edit: I could be wrong, but from what I know, those coins are gone. You'd have to somehow generate the private key for that address.., not gonna happen.
there is the fact that counterparty (and as a result fldc) runs off the bitcoin network. I'm not sure how that works, so there may be some hope... hopefully.