diff --git a/.distignore b/.distignore
index 55b299c5..5f290b9e 100644
--- a/.distignore
+++ b/.distignore
@@ -8,4 +8,7 @@
 .gitignore
 composer.json
 CHANGELOG.txt
-README.md
\ No newline at end of file
+README.md
+.wp-env.json
+package-lock.json
+package.json
\ No newline at end of file
diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index e3dae123..3b90250b 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,4 +1,11 @@
 == Changelog == 
+= 6.12.24 - Dec 19, 2024 =
+- Plugin code improvements for better security and stability.
+
+= 6.12.23 - Dec 5, 2024 =
+- Fixed a PHP error message ("Deprecated: Use of "self" in callables is deprecated") for PHP versions since 8.2.
+- Internal improvements and optimizations.
+
 = 6.12.22 - Nov 7, 2024 =
 - **WordPress 6.7 and Twenty Twenty Five theme compatibility.** The new WordPress version will be released soon. The Ecwid ecommerce shopping cart plugin is ready for the new release — everything works well in your WordPress admin and storefront pages. Feel free to upgrade your site to WordPress 6.7 and try a new theme.
 - Fixed issue with links of Product Small block when it contains non-latin characters.
diff --git a/ecwid-shopping-cart.php b/ecwid-shopping-cart.php
index 15f428e1..8886d267 100644
--- a/ecwid-shopping-cart.php
+++ b/ecwid-shopping-cart.php
@@ -5,7 +5,7 @@
 Description: Ecwid by Lightspeed is a free full-featured shopping cart. It can be easily integrated with any Wordpress blog and takes less than 5 minutes to set up.
 Text Domain: ecwid-shopping-cart
 Author: Ecwid Ecommerce
-Version: 6.12.22
+Version: 6.12.23
 Author URI: https://ecwid.to/ecwid-site
 License: GPLv2 or later
 */
@@ -2906,7 +2906,7 @@ function ecwid_sso() {
 
 		$user_data_encoded = base64_encode(json_encode($user_data));
 		$time = time();
-		$hmac = ecwid_hmacsha1("$user_data_encoded $time", $key);
+        $hmac = hash_hmac('sha256', "$user_data_encoded $time", $key);
 
 		$ecwid_sso_profile = "$user_data_encoded $hmac $time";
     }
@@ -2945,31 +2945,6 @@ function ecwid_sso() {
 	return $ecwid_sso_script;
 }
 
-// from: http://www.php.net/manual/en/function.sha1.php#39492
-function ecwid_hmacsha1($data, $key) {
-  if (function_exists("hash_hmac")) {
-    return hash_hmac('sha1', $data, $key);
-  } else {
-    $blocksize=64;
-    $hashfunc='sha1';
-    if (strlen($key)>$blocksize)
-        $key=pack('H*', $hashfunc($key));
-    $key=str_pad($key,$blocksize,chr(0x00));
-    $ipad=str_repeat(chr(0x36),$blocksize);
-    $opad=str_repeat(chr(0x5c),$blocksize);
-    $hmac = pack(
-                'H*',$hashfunc(
-                    ($key^$opad).pack(
-                        'H*',$hashfunc(
-                            ($key^$ipad).$data
-                        )
-                    )
-                )
-            );
-    return bin2hex($hmac);
-    }
-}
-
 function ecwid_should_display_escaped_fragment_catalog()
 {
 	if (!isset($_GET['_escaped_fragment_'])) return;
diff --git a/lib/ecwid_api_v3.php b/lib/ecwid_api_v3.php
index 59ee06d4..e465e401 100644
--- a/lib/ecwid_api_v3.php
+++ b/lib/ecwid_api_v3.php
@@ -827,8 +827,6 @@ public function create_store( $params = array() ) {
 		}
 
 		$request_params = array(
-			'appClientId',
-			'appSecretKey',
 			'returnApiToken' => 'true',
 		);
 		$url            = $this->build_request_url( $this->_stores_api_url, $request_params );
@@ -840,6 +838,8 @@ public function create_store( $params = array() ) {
 				'timeout' => 20,
 				'headers' => array(
 					'Content-Type' => 'application/json;charset="utf-8"',
+                    'X-Ecwid-App-Client-Id' => Ecwid_Config::get_oauth_appid(),
+                    'X-Ecwid-App-Secret-Key' => Ecwid_Config::get_oauth_appsecret()
 				),
 			)
 		);
diff --git a/readme.txt b/readme.txt
index 6d643692..7e975bac 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,7 +5,7 @@ License: GPLv2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html
 Requires at least: 4.4
 Tested up to: 6.7
-Stable tag: 6.12.22
+Stable tag: 6.12.24
 
 Powerful, easy to use ecommerce shopping cart for WordPress. Sell on Facebook and Instagram. iPhone & Android apps. Superb support. Free plan available.
 
@@ -153,6 +153,13 @@ You can use Ecwid’s built-in import tools to copy your store products from any
 * [Ecwid Help Center](http://help.ecwid.com "Ecwid Help")
 
 == Changelog ==
+= 6.12.24 - Dec 19, 2024 =
+- Plugin code improvements for better security and stability.
+
+= 6.12.23 - Dec 5, 2024 =
+- Fixed a PHP error message ("Deprecated: Use of "self" in callables is deprecated") for PHP versions since 8.2.
+- Internal improvements and optimizations.
+
 = 6.12.22 - Nov 7, 2024 =
 - **WordPress 6.7 and Twenty Twenty Five theme compatibility.** The new WordPress version will be released soon. The Ecwid ecommerce shopping cart plugin is ready for the new release — everything works well in your WordPress admin and storefront pages. Feel free to upgrade your site to WordPress 6.7 and try a new theme.
 - Fixed issue with links of Product Small block when it contains non-latin characters.