[Plugin: Contact Form 7] Email sent but confirmation message doesn't show

There is a conflict with the Contact From 7 plugin and the theme I am using: Fullscreen

Everything works fine except that I never see a confirmation message on the submission page that my form has been submitted. I’ve tried redirecting to a new page as well and that wont work.

When I switch to the 2011 theme the plugin works perfectly. Form is submitted, email received, and auto-responder sent and received.

I really want this to work! Is there anything I can do? Thank you.

https://www.ads-software.com/extend/plugins/contact-form-7/