Why does my welcome page have a "0" under the header?

I do not want the number of questions displayed on my welcome page, but if I choose not to, it puts a "0" in place of where the number of questions would be. How do I fix this?

It is because you have added Sub-headers. You can remove those sub-headers and use "Text" field to function as your sub-header.

You can search for the keyword "Header" in the widgets tab.