I don't think that you will profitably earn with nice hash I have tried it online and I wait for almost 2months I have invested 20 dollars in it so the hashpower will be doubled and I can mine faster but, it was jus a waste of time, it was just a waste of money and effort. I will not say that this is SCAM in its either software or online all I can say is do it at your own risk. Try to read more or ask more about it.
but it had something problem few month ago, probably you was it side;
now it wors perfect;
also i have pc and not bought ghs
