diff --git a/class/class-mainwp-child-callable.php b/class/class-mainwp-child-callable.php
index 4d48d15..dcd2a99 100644
--- a/class/class-mainwp-child-callable.php
+++ b/class/class-mainwp-child-callable.php
@@ -97,7 +97,7 @@ class MainWP_Child_Callable {
 		}
 		return self::$instance;
 	}
-	
+
 	public function init_call_functions( $auth ) {
 		$callable  = false;
 		$func_auth = false;
@@ -135,7 +135,7 @@ class MainWP_Child_Callable {
 			MainWP_Helper::error( __( 'Required version has not been detected. Please, make sure that you are using the latest version of the MainWP Child plugin on your site.', 'mainwp-child' ) );
 		}
 	}
-	
+
 	public function is_callable_function( $func ) {
 		if ( isset( $this->callableFunctions[ $func ] ) ) {
 			return true;
@@ -1108,7 +1108,7 @@ class MainWP_Child_Callable {
 		mainwp_child_helper()->write( $information );
 	}
 
-	
+
 	public function uploader_upload_file( $file_url, $path, $file_name ) {
 		// to fix uploader extension rename htaccess file issue.
 		if ( '.htaccess' != $file_name && '.htpasswd' != $file_name ) {
@@ -1149,7 +1149,7 @@ class MainWP_Child_Callable {
 
 		return array( 'path' => $full_file_name );
 	}
-	
+
 	public function wordpress_seo() {
 		\MainWP_WordPress_SEO::instance()->action();
 	}
diff --git a/class/class-mainwp-child-stats.php b/class/class-mainwp-child-stats.php
index cb45faf..91398c9 100644
--- a/class/class-mainwp-child-stats.php
+++ b/class/class-mainwp-child-stats.php
@@ -39,10 +39,9 @@ class MainWP_Child_Stats {
 	}
 
 	/**
-	 * 
+	 *
 	 * Show stats without login - only allowed while no account is added yet.
-	 * 
-	 */	
+	 */
 	public function get_site_stats_no_auth( $information = array() ) {
 		if ( get_option( 'mainwp_child_pubkey' ) ) {
 			$hint = '<br/>' . __( 'Hint: Go to the child site, deactivate and reactivate the MainWP Child plugin and try again.', 'mainwp-child' );
@@ -529,7 +528,7 @@ class MainWP_Child_Stats {
 
 		if ( isset( $_POST['pluginDir'] ) ) {
 			if ( get_option( 'mainwp_child_pluginDir' ) !== $_POST['pluginDir'] ) {
-				MainWP_Helper::update_option( 'mainwp_child_pluginDir', $_POST['pluginDir'], 'yes' );				
+				MainWP_Helper::update_option( 'mainwp_child_pluginDir', $_POST['pluginDir'], 'yes' );
 			}
 		} elseif ( false !== get_option( 'mainwp_child_pluginDir' ) ) {
 			MainWP_Helper::update_option( 'mainwp_child_pluginDir', false, 'yes' );
diff --git a/class/class-mainwp-child.php b/class/class-mainwp-child.php
index 9541f42..0b1bc77 100644
--- a/class/class-mainwp-child.php
+++ b/class/class-mainwp-child.php
@@ -57,7 +57,7 @@ class MainWP_Child {
 
 		MainWP_Connect::instance()->check_other_auth();
 
-		$this->init_extensions();		
+		$this->init_extensions();
 
 		if ( ! get_option( 'mainwp_child_pubkey' ) ) {
 			MainWP_Child_Branding::instance()->save_branding_options( 'branding_disconnected', 'yes' );
@@ -808,9 +808,10 @@ class MainWP_Child {
 		}
 
 		// if auth connect are not valid then exit or return.
-		if ( ! MainWP_Connect::instance()->parse_init_auth() )
+		if ( ! MainWP_Connect::instance()->parse_init_auth() ) {
 			return;
-		
+		}
+
 		$auth = MainWP_Connect::instance()->auth( isset( $_POST['mainwpsignature'] ) ? $_POST['mainwpsignature'] : '', isset( $_POST['function'] ) ? $_POST['function'] : '', isset( $_POST['nonce'] ) ? $_POST['nonce'] : '', isset( $_POST['nossl'] ) ? $_POST['nossl'] : 0 );
 
 		if ( ! $auth && isset( $_POST['mainwpsignature'] ) ) {
@@ -887,15 +888,15 @@ class MainWP_Child {
 		}
 
 		MainWP_Child_Callable::get_instance()->init_call_functions( $auth );
-		
+
 		MainWP_Keyword_Links::instance()->parse_init_keyword_links();
 	}
-	
+
 	public function check_login() {
 		MainWP_Connect::instance()->check_login();
 	}
 
-	private function init_extensions() {		
+	private function init_extensions() {
 		MainWP_Clone::get()->init();
 		MainWP_Child_Server_Information::init();
 		MainWP_Client_Report::instance()->init();
@@ -903,7 +904,7 @@ class MainWP_Child {
 		MainWP_Child_Themes_Check::instance();
 		MainWP_Utility::instance()->run_saved_snippets();
 	}
-	
+
 	private function parse_init_extensions() {
 		// Handle fatal errors for those init if needed.
 		\MainWP_Child_IThemes_Security::instance()->ithemes_init();
diff --git a/class/class-mainwp-clone-install.php b/class/class-mainwp-clone-install.php
index 160ce7c..b749677 100644
--- a/class/class-mainwp-clone-install.php
+++ b/class/class-mainwp-clone-install.php
@@ -724,8 +724,8 @@ class MainWP_Clone_Install {
 		}
 			return true;
 	}
-	
-	
+
+
 	public function is_valid_auth( $key ) {
 		$auths = get_option( 'mainwp_child_auth' );
 		if ( ! $auths ) {
diff --git a/class/class-mainwp-connect.php b/class/class-mainwp-connect.php
index 34d62b0..90e26df 100644
--- a/class/class-mainwp-connect.php
+++ b/class/class-mainwp-connect.php
@@ -3,7 +3,7 @@
 namespace MainWP\Child;
 
 class MainWP_Connect {
-	
+
 	public static $instance = null;
 
 	/**
@@ -23,7 +23,7 @@ class MainWP_Connect {
 		}
 		return self::$instance;
 	}
-	
+
 	// This will register the current wp - thus generating the public key etc.
 	public function register_site() {
 		global $current_user;
@@ -88,11 +88,11 @@ class MainWP_Connect {
 		MainWP_Child_Stats::get_instance()->get_site_stats( $information );
 	}
 
-	
+
 	public function parse_init_auth() {
-		
+
 		$auth = $this->auth( isset( $_POST['mainwpsignature'] ) ? $_POST['mainwpsignature'] : '', isset( $_POST['function'] ) ? $_POST['function'] : '', isset( $_POST['nonce'] ) ? $_POST['nonce'] : '', isset( $_POST['nossl'] ) ? $_POST['nossl'] : 0 );
-		
+
 		if ( ! $auth && isset( $_POST['mainwpsignature'] ) ) {
 			MainWP_Helper::error( __( 'Authentication failed! Please deactivate & re-activate the MainWP Child plugin on this site and try again.', 'mainwp-child' ) );
 		}
@@ -157,11 +157,11 @@ class MainWP_Connect {
 				die();
 			}
 		}
-		
+
 		return true;
 	}
-	
-	
+
+
 	public function auth( $signature, $func, $nonce, $pNossl ) {
 		if ( empty( $signature ) || ! isset( $func ) || ( ! get_option( 'mainwp_child_pubkey' ) && ! get_option( 'mainwp_child_nossl_key' ) ) ) {
 			$auth = false;
@@ -182,7 +182,7 @@ class MainWP_Connect {
 
 		return $auth;
 	}
-	
+
 	public function parse_login_required() {
 
 		global $current_user;
@@ -191,7 +191,7 @@ class MainWP_Connect {
 		$username             = rawurldecode( $_REQUEST['user'] );
 
 		if ( isset( $_REQUEST['alt_user'] ) && ! empty( $_REQUEST['alt_user'] ) ) {
-			$alter_login_required = MainWP_Connect::instance()->check_login_as( $_REQUEST['alt_user'] );
+			$alter_login_required = self::instance()->check_login_as( $_REQUEST['alt_user'] );
 			if ( $alter_login_required ) {
 				$username = rawurldecode( $_REQUEST['alt_user'] );
 			}
@@ -214,8 +214,8 @@ class MainWP_Connect {
 			$file = $_REQUEST['fdl'];
 		}
 
-		$auth = MainWP_Connect::instance()->auth( $signature, rawurldecode( ( isset( $_REQUEST['where'] ) ? $_REQUEST['where'] : $file ) ), isset( $_REQUEST['nonce'] ) ? $_REQUEST['nonce'] : '', isset( $_REQUEST['nossl'] ) ? $_REQUEST['nossl'] : 0 );
-		
+		$auth = self::instance()->auth( $signature, rawurldecode( ( isset( $_REQUEST['where'] ) ? $_REQUEST['where'] : $file ) ), isset( $_REQUEST['nonce'] ) ? $_REQUEST['nonce'] : '', isset( $_REQUEST['nossl'] ) ? $_REQUEST['nossl'] : 0 );
+
 		if ( ! $auth ) {
 			return;
 		}
@@ -293,7 +293,7 @@ class MainWP_Connect {
 
 		exit();
 	}
-	
+
 	public function check_login() {
 
 		if ( ! isset( $_POST['mainwpsignature'] ) || empty( $_POST['mainwpsignature'] ) ) {
@@ -370,14 +370,12 @@ class MainWP_Connect {
 			}
 		}
 	}
-	
+
 	/**
-	 * 
+	 *
 	 * Check to support login by alternative admin.
 	 * Return false will login by connected admin user.
 	 * Return true will try to login as alternative user.
-	 * 
-	 * 
 	 */
 	public function check_login_as( $alter_login ) {
 
@@ -434,8 +432,8 @@ class MainWP_Connect {
 
 		return false;
 	}
-	
-	
+
+
 	public function check_other_auth() {
 		$auths = get_option( 'mainwp_child_auth' );
 
diff --git a/class/class-mainwp-helper.php b/class/class-mainwp-helper.php
index 6f7e69f..98d3e7e 100644
--- a/class/class-mainwp-helper.php
+++ b/class/class-mainwp-helper.php
@@ -177,10 +177,11 @@ class MainWP_Helper {
 			$local_img_url  = $upload_dir['url'] . '/' . basename( $local_img_path );
 
 			// to fix issue re-create new attachment.
-			if ( $check_file_existed ) {				
-				$result = self::check_media_file_existed( $upload_dir, $filename, $temporary_file, $local_img_path, $local_img_url );				
-				if ( ! empty( $result ) )
+			if ( $check_file_existed ) {
+				$result = self::check_media_file_existed( $upload_dir, $filename, $temporary_file, $local_img_path, $local_img_url );
+				if ( ! empty( $result ) ) {
 					return $result;
+				}
 			}
 
 			// file exists, do not overwrite, generate unique file name.
@@ -192,18 +193,17 @@ class MainWP_Helper {
 
 			$moved = rename( $temporary_file, $local_img_path );
 			if ( $moved ) {
-				return self::insert_attachment_media( $img_data, $img_url, $parent_id, $local_img_path, $local_img_url );				
+				return self::insert_attachment_media( $img_data, $img_url, $parent_id, $local_img_path, $local_img_url );
 			}
-			
 		}
-		
+
 		if ( file_exists( $temporary_file ) ) {
 			unlink( $temporary_file );
 		}
 		return null;
 	}
-	
-	private static function check_media_file_existed( $upload_dir, $filename, $temporary_file, &$local_img_path, $local_img_url ){		
+
+	private static function check_media_file_existed( $upload_dir, $filename, $temporary_file, &$local_img_path, $local_img_url ) {
 		if ( file_exists( $local_img_path ) ) {
 			if ( filesize( $local_img_path ) == filesize( $temporary_file ) ) {
 				$result = self::get_maybe_existed_attached_id( $local_img_url );
@@ -241,9 +241,9 @@ class MainWP_Helper {
 			}
 		}
 	}
-	
-	private static function insert_attachment_media( $img_data, $img_url, $parent_id, $local_img_path, $local_img_url ){		
-		
+
+	private static function insert_attachment_media( $img_data, $img_url, $parent_id, $local_img_path, $local_img_url ) {
+
 		$wp_filetype = wp_check_filetype( basename( $img_url ), null ); // Get the filetype to set the mimetype.
 		$attachment  = array(
 			'post_mime_type' => $wp_filetype['type'],
diff --git a/class/class-mainwp-utility.php b/class/class-mainwp-utility.php
index fc54903..3411155 100644
--- a/class/class-mainwp-utility.php
+++ b/class/class-mainwp-utility.php
@@ -5,7 +5,7 @@ namespace MainWP\Child;
 // phpcs:disable WordPress.WP.AlternativeFunctions -- to custom.
 
 class MainWP_Utility {
-	
+
 	public static $instance = null;
 
 	/**
@@ -25,12 +25,12 @@ class MainWP_Utility {
 		}
 		return self::$instance;
 	}
-	
-	
+
+
 	public function run_saved_snippets() {
-		
+
 		if ( isset( $_POST['action'] ) && isset( $_POST['mainwpsignature'] ) ) {
-			$action = $_POST['action'];			
+			$action = $_POST['action'];
 			if ( 'run_snippet' === $action || 'save_snippet' === $action || 'delete_snippet' === $action ) {
 				return;  // do not run saved snippets if in do action snippet.
 			}
@@ -45,7 +45,7 @@ class MainWP_Utility {
 			}
 		}
 	}
-	
+
 	public static function fix_for_custom_themes() {
 		if ( file_exists( ABSPATH . '/wp-admin/includes/screen.php' ) ) {
 			include_once ABSPATH . '/wp-admin/includes/screen.php';
@@ -54,12 +54,11 @@ class MainWP_Utility {
 			et_register_updates_component();
 		}
 	}
-	
+
 	/**
-	 * 
+	 *
 	 * To support maintenance alert
-	 * 	 
-	 */	
+	 */
 	public function maintenance_alert() {
 		if ( ! is_404() ) {
 			return;
@@ -142,7 +141,7 @@ class MainWP_Utility {
 			)
 		);
 	}
-	
+
 	public function cron_active() {
 		if ( ! defined( 'DOING_CRON' ) || ! DOING_CRON ) {
 			return;
@@ -160,12 +159,11 @@ class MainWP_Utility {
 		}
 		die( '' );
 	}
-	
-	
+
+
 	/**
-	 * 
+	 *
 	 * To support upload backup files.
-	 * 
 	 */
 	public function upload_file( $file, $offset = 0 ) {
 		$dirs      = MainWP_Helper::get_mainwp_dir( 'backup' );
@@ -209,5 +207,5 @@ class MainWP_Utility {
 
 		return fclose( $handle );
 	}
-	
+
 }