I don't understand what to do.

I downloaded the Heroes 3 version "Legend of the Red Dragon".

My first thought after reading this question was: "WTF?!":confused: But thanks to Giltonielle's answer, after following the link, I finally understood that it's about the WoG campaigns. I don't know, maybe there really is a WoG variation under that name somewhere, but in any case - people, please write clearly if you want to be understood and get a sensible answer/advice!

and also listens to Black Obelisk

Well, how could it be otherwise: ;)