MyBB Community Forums

Hi , I have a Categorize Named cate1 inside that categorize i have 1 forum named forum1 i have try to copy forum or Duplicate the cat1 but inside the cate1 now i have the duplicate Cate1 named cate2  a Categorize inside one and I cannot Deleted Because I dont See in the Admin control panel  in the forum option I see cate1 But i find and i find trust me .. Is Not Showing I dont have any option for that cate2 .. Is not Appear How I Can Deleted The Cate2 ? inside the Cate1

note cate2 is maybe a forum I dont know but I cannot deleted ...