Hey guys

This is my first post on this website, and I'm still trying to learn the basics :) I originally signed up here to gain access to the website "dtube.video" which requires a Steemit login. The problem however, is that when I try to log in to the website, it just says "Private posting key wrong".

Does anyone know why this happens? I recieved a password from the website, which I think is referred to as a "masterkey", but I can't seem to find out where to make a private posting key.

Thanks for any help :)