Separator not working on form

I am trying to insert some text to tell users who register that their full last names will not appear on the website. Given the options in the form builder, I am trying to utilize the separator. However, it’s not appearing.

If there is another way you can suggest to include any text within the registration form please let me know. Thank you.

EDIT: I didn’t notice that there was separate form for registration and an account. Please disregard. Thank you.