The DVD is bad

I have this machine, therefore, bought mainly because especially the enclosed DVD was highly praised by all sides, especially for beginners. But this DVD is really bad! Terrible picture quality, the individual steps will be presented with another Overlock model and the camera angle is so bad that you especially from threading very little looks. The DVD is a bad reason to buy.
With the machine itself, I am very satisfied, it does what it should, is not overly loud and has all the necessary features I need. I sew mainly children's clothes by simple cuts from Jersey.