jckazius on "[Theme: Fruitful] Contact form on mobile"

On this website:

http://www.mooibijnel.nl

which uses the fruitful theme, the contact form is not working correctly on mobile devices. Try to fill in the contact form on an iPhone for instance...

http://www.mooibijnel.nl/contact-info/

Is there a way to fix this?

Thanks in advance.
Jaco Kazius