I do not recommend using this service; it's a real scam. I've noticed more than once that funds from my balance disappear (gradually, but systematically). The pool's price is significantly lower than that of competitors, and I haven't checked and don't intend to check the withdrawal of funds. P.S. On my own equipment, I earned an average of 3-4 dollars, while on ViaBTC, I only made 1.5 dollars.