Problems with Plugin "Contact Form 7" and Theme?

Theme: Catch Flame Pro 3.5 Plug in: Contact form 7 Problem: The spinning arrow icon shows up once I submit a form, but then nothing happens. The support forum fo Contact form 7 thinks that there is a problem with the Theme. http://contactform7.com/faq/the-spinning-arrow-icon-shows-up-once-i-submit-a-form/ Do you have any idea? Thank you