ya really good advices mate take a look 
but who use cash now? I can find only cash ways at ur web page
but who use cash now? I can find only cash ways at ur web pageRight, for now you can use our service in BTC-CASH or CASH-BTC ways
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Everybody should be aware dealing with unknown services especially those offering FIAT pairs exchange. This platform is totally unknown and no one confirms that it's running well.
If you can sign a message as suggested by SFR or all what you've said has no sense .