As start I just created account on site (without downloading application). As default number I've registered my american number (just thought it should be number where I want all calls to be forwarded TO).
So now I try to change the number to my russian one. System sends me SMS with code but it's always does not match. Please let me know what should I do.
BTW: one more question - I need calls to be forwarded not on SIM card number, but to Google Voice number. How can I do it?