Why can´t I change the status of a member from member to administrator in the control panel?
The member is only recognized as a super moderator?
Because only members who also have an administrator account on your nuke-system with forum-rights can administrate the forum.
So if you wish to do so, you have to create for this members admin-accounts with forum rights.
Super Moderator is the highes status a "normal member" can reach.