It is a XaraTemplates.com template and I have used his approach for email forms successfully with my provider.
SETTINGS

Open this placeholder “HTML code (body)” and edit the email address in second line: value="your@email.com"
(Edit the email address in all forms in all variants)

This contact form works only on a server with php. (99.9% servers)

The email address should be from the domain that is hosted on this server.
(Some servers allow different domains)
Have you changed the Placeholder as per the above instructions on all Variants?
Can you upload your changed code here?

Acorn