diff --git a/README.md b/README.md
index 04579a7..e4c4450 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ if ( ! class_exists( 'SureCart\Licensing\Client' ) ) {
 }
 ```
 
+**Note:** Every plugin or theme that bundles the SDK shares the `SureCart\Licensing` namespace, so whichever copy loads first is used by all of them. An older copy bundled elsewhere can override fixes in yours. We recommend prefixing the namespace with a scoper such as [Strauss](https://github.com/BrianHenryIE/strauss) or [PHP-Scoper](https://github.com/humbug/php-scoper) when bundling.
+
 ## Include a release.json
 
 Add a `release.json` file to the root of your plugin or theme project. 
diff --git a/src/Client.php b/src/Client.php
index 935508a..92871dd 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -12,7 +12,7 @@ class Client {
 	 *
 	 * @var string
 	 */
-	public $version = '1.2.2';
+	public $version = '1.2.3';
 
 	/**
 	 * Name of the plugin
diff --git a/src/Settings.php b/src/Settings.php
index 5924986..9d0c35f 100644
--- a/src/Settings.php
+++ b/src/Settings.php
@@ -413,6 +413,11 @@ public function redirect( $url ) {
 	 * @return void
 	 */
 	public function add_notice( $code, $message, $type = 'info' ) {
+		// Only loaded in wp-admin; the settings page re-runs get_activation() on render.
+		if ( ! function_exists( 'add_settings_error' ) ) {
+			return;
+		}
+
 		add_settings_error(
 			$this->name . '_license_options', // matches what we registered in `register_setting.
 			$code, // the error code.