All of the contact forms using this plugin are returning a message when anyone hits submit, “Failed to send your message. Please try later or contact the administrator by another method.”
I have tried downloading a few plugins that other people have said fix the problem such as
HGK SMTP and WP-Mail-SMTP
neither have worked.
Please see the link below to see problem yourself…
http://www.dxdigitalmarketing.com/inbound-marketing-inbound-marketing-plus-inquiry/