diff --git a/includes/class-freemius.php b/includes/class-freemius.php
index 5ee9bc99..f7d86281 100755
--- a/includes/class-freemius.php
+++ b/includes/class-freemius.php
@@ -17209,6 +17209,10 @@ function opt_in(
             $params['is_extensions_tracking_allowed'] = FS_Permission_Manager::instance( $this )->is_extensions_tracking_allowed();
             $params['is_diagnostic_tracking_allowed'] = FS_Permission_Manager::instance( $this )->is_diagnostic_tracking_allowed();
 
+            // We want to allow people activating license on unpublished plugins if they are using a license key
+            if ( ! empty($license_key))
+                $params['show_pending'] = true;
+
             $request = array(
                 'method'  => 'POST',
                 'body'    => $params,
diff --git a/templates/add-ons.php b/templates/add-ons.php
index d4078f0c..a924f335 100755
--- a/templates/add-ons.php
+++ b/templates/add-ons.php
@@ -50,7 +50,28 @@
 
 		<?php $fs->do_action( 'addons/after_title' ) ?>
 
-		<div id="poststuff">
+        <?php
+            if (defined('WP_FS__DEV_MODE') && WP_FS__DEV_MODE && ! $fs->has_secret_key()) :
+    $integration_url = 'https://dashboard.freemius.com/#!/live/plugins/' . $fs->get_id() . '/integration/';
+    $secret_const    = 'WP_FS__' . $slug . '_SECRET_KEY';
+        ?>
+    <div class="notice notice-warning">
+        <?php echo sprintf(
+            /* translators: %s: constant name to add into wp-config.php */
+            '<p>You have enabled <code>WP_FS__DEV_MODE</code>, but no secret key is defined for this plugin. As a result, add-ons that are not publicly released yet, or that do not have publicly visible pricing, will not appear in the list below.</p>
+            <p>To configure your development environment properly, add the <code>%s</code> constant to your wp-config.php, then reload this page.
+            <a href="%s" target="_blank" rel="noopener">%s</a></p>',
+            $secret_const,
+            esc_url( $integration_url ),
+            esc_html( fs_text_inline( 'Read the integration guide', 'read-integration-guide', $slug ) )
+        ); ?>
+    </div>
+        <?php
+            endif;
+            ?>
+
+
+        <div id="poststuff">
 			<?php if ( ! $has_addons ) : ?>
 				<h3><?php echo esc_html( sprintf(
 						'%s... %s',