I'm not sure why you don't see them on the Forums or Category pages when logged in as Admin, but in order to be seen on the public pages, you would have to give the right permissions groups access to those new forums.
Try deleting those and creating them again with chosing groups that you wish to have read, write, access etc. (familiarize yourself with the groups).
You might run into this problem:
https://coderanch.com/t/576042 [originally posted on jforum.net by Anonymous]