metil on "[Plugin: MailChimp for WordPress] New subscribers Notifications"

Hello My friend!
when guys confirm subscribe form i recieved next message:
but i insert another email for notification of subscribers, can help pls what need , also help pls how be with welcome notification for guys if i disable "Opt-in" function, i want:
they insert email > confirm and in them e-mail will send my message.
br
my web: http://kdfeatured.com (pop up on "Sumbit your photos" Button

New subscription on KD Featured
IMPORTANT! You have received this message because connection to your e-mail marketing software failed. Please check connection setting in the plugin configuration.
The resource submitted could not be validated. For field-specific details, see the 'errors' array. array ( 0 => stdClass::__set_state(array( 'field' => '', 'message' => 'Required fields were not provided: email_address', )), 1 => stdClass::__set_state(array( 'field' => 'email_address', 'message' => 'Schema describes string, NULL found instead', )),
)
E-mail:
Name: --
EMAIL: [email protected]
FNAME: Oleg
LNAME: Klochenko
Form: Theme Builder 30 (757)
Referer: http://kdfeatured.com/
Date: 2016-07-29 17:48
IP: 46.188.101.176

https://wordpress.org/plugins/mailchimp-for-wp/