fixed subscribe on registration not using the proper setting

lib/Config/Menu.php

@@ -190,6 +190,8 @@ class Menu {
   }
 
   function welcome() {
+    if((bool)(defined('DOING_AJAX') && DOING_AJAX)) return;
+
     global $wp;
     $current_url = home_url(add_query_arg($wp->query_string, $wp->request));
     $redirect_url =

lib/Subscription/Registration.php

@@ -44,7 +44,8 @@ class Registration {
     $errors = null
   ) {
     if(
-      isset($_POST['mailpoet']['subscribe_on_register'])
+      empty($errors->errors)
+      && isset($_POST['mailpoet']['subscribe_on_register'])
       && (bool)$_POST['mailpoet']['subscribe_on_register'] === true
     ) {
       static::subscribeNewUser(
@@ -56,7 +57,7 @@ class Registration {
 
   private static function subscribeNewUser($name, $email) {
     $segment_ids = Setting::getValue(
-      'subscribe.on_comment.segments',
+      'subscribe.on_register.segments',
       array()
     );