The setting parameter do not know which tags exist. You need to write the tag name here, click create: 'faq', and so the tag name will be selected. You can select as many tags as necessary, any one of them will be enough to un-hide the post.
Be careful, if your account has admin privilege, then it has full permission for every category, but hiding a category is done by checking if the account can effectively create a new post. Yours can, so your account will be able to see every post everywhere. To test the component, I advise you to create a test account to see the same thing a user would see.