From what I can see, it looks like VaultWiki is expecting your articles to be created in the forum called "Content Links", but only "Welcome to the Link Library" is showing up as part of the wiki. (Also, "Content Links" is closed for posting, or is a forum category).
Please check that the Default namespace in the Namespace Manager is pointing to the forum you really want and that it is a forum that can actually be posted in. Also make sure that the "Namespace Functions" box has the correct wiki namespaces selected.
You may have to resave these anyway, because it sounds like vBulletin's setting cache is out of sync somehow.
After fixing these, already existing articles might still have no text. Go to VaultWiki > Wiki URL Manager > Rebuild Page URLs to fix their text.