Hi Latessha, thank you for your question!
One reason you might be getting that message that there was a duplicate widget is if you were using Call to Action as the title of the widget you were trying to add. That particular title is reserved for the widget installed during the Inspirations process and unfortunately you will be will unable to create a new one with that name even if the original was removed. Instead of Call to Action you can try abbreviating the Title to CTA to see if that works for you.
I hope that helps you get your Call to Action working again and please let us know if there is anything else that we can do to help!