No! All virtual currencies (eg: Bitcoin, Bitcoin Cash, Ethereum, Litecoin) are completely different currencies and have unique wallets that can NOT be shared or reused between different virtual currencies.
You will lose your coins if you use the wrong wallet!
As an additional note, even Bitcoin and Bitcoin Cash are also entirely different virtual currencies. They have completely different wallets and can't be used interchangeably.
Coincurve is NOT responsible for your mistakes that result in loss of coins.