SymptomsThrough Parallels Plesk Panel version 10.3 or above, create a Sitebuilder site with the Contact Form module. In the tab Settings of the Sitebuilder menu, enable option "Add your site copy to Facebook" and publish the site.
In a site copy shown in Facebook, users of the Safari (Internet Explorer 7) browser cannot send messages through a contact form. The validation of captcha in the contact form always fails. The error message, "Please fix this field," appears near the 'Reload Captcha' field, even when the captcha was inserted correctly.