Playing Heroes of Might and Magic V on Ubisoft servers.

I bought the gold edition from Buka for 380 rubles at the Trek store (by the way, is it correct that Buka is the publisher, as someone mentioned on this forum that it was 1C?). I downloaded patch 3.1 from the Buka website, installed it, and tried to log in to the Ubisoft.com network. I entered the serial number, it was verified, and then it prompted me to enter a password and a network password. I understand that I need to create a profile first, and the profile button seems to be active, but nothing happens when I click it. Does anyone know how to resolve this unpleasant situation?