I am a SoV Member, but my forum profile doesn't show it.

This is because the SoV forums and Darkthrone are on two seperate sites.
In order for your forum profile to show you as being a SoV member, you will need to join the forum group. You can do this by clicking on the "Groups" button at the top of the page. Click on the group called "SoV Members" and there should then by a button to click to apply for membership of the group. If you are using the same username as your Darkthrone account I will add you within 24 hours. If, however, your username is different, I will send you a PM asking you what your DT username is.