I am using the Into The Woods theme and have deleted my original form which used the Cloud theme. I am unable to delete the Cloud theme in settings as

Could you explain further? The current theme you have in your form is the Into The Woods theme. If in the "page title" the old's them title is showing, you can update it as described in this guide: https://www.jotform.com/help/373-How-to-Change-the-Page-Title-of-the-Form