diff --git a/class/layout/abstract-engine.php b/class/layout/abstract-engine.php
index fae5af2..e624aaf 100644
--- a/class/layout/abstract-engine.php
+++ b/class/layout/abstract-engine.php
@@ -310,12 +310,12 @@ abstract class MCI_Footnotes_Layout_Engine {
 
 		// Get current section.
 		reset( $this->a_arr_sections );
-		$l_str_active_section_id = isset( $_GET['t'] ) ? sanitize_option( wp_unslash( $_GET['t'] ) ) : key( $this->a_arr_sections );
+		$l_str_active_section_id = isset( $_GET['t'] ) ? sanitize_text_field( wp_unslash( $_GET['t'] ) ) : key( $this->a_arr_sections );
 		$l_arr_active_section    = $this->a_arr_sections[ $l_str_active_section_id ];
 
 		foreach ( MCI_Footnotes_Settings::instance()->get_defaults( $l_arr_active_section['container'] ) as $l_str_key => $l_mixed_value ) {
 			if ( array_key_exists( $l_str_key, $_POST ) ) {
-				$l_arr_new_settings[ $l_str_key ] = sanitize_option( wp_unslash( $_POST[ $l_str_key ] ) );
+				$l_arr_new_settings[ $l_str_key ] = sanitize_text_field( wp_unslash( $_POST[ $l_str_key ] ) );
 			} else {
 				// Setting is not defined in the POST array, define it to avoid the Default value.
 				$l_arr_new_settings[ $l_str_key ] = '';
diff --git a/class/layout/diagnostics.php b/class/layout/diagnostics.php
index 55b37b6..552c4e7 100644
--- a/class/layout/diagnostics.php
+++ b/class/layout/diagnostics.php
@@ -102,12 +102,12 @@ class MCI_Footnotes_Layout_Diagnostics extends MCI_Footnotes_Layout_Engine {
 		if ( ! isset( $_SERVER['SERVER_NAME'] ) ) {
 			die;
 		} else {
-			$l_str_server_name = wp_kses_post( wp_unslash( $_SERVER['SERVER_NAME'] ) );
+			$l_str_server_name = sanitize_text_field( wp_unslash( $_SERVER['SERVER_NAME'] ) );
 		}
 		if ( ! isset( $_SERVER['HTTP_USER_AGENT'] ) ) {
 			die;
 		} else {
-			$l_str_http_user_agent = wp_kses_post( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) );
+			$l_str_http_user_agent = sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) );
 		}
 
 		// Replace all placeholders.
@@ -140,7 +140,9 @@ class MCI_Footnotes_Layout_Diagnostics extends MCI_Footnotes_Layout_Engine {
 				'plugins'                  => $l_str_wordpress_plugins,
 			)
 		);
+		// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
 		// Display template with replaced placeholders.
-		echo wp_kses_post( $l_obj_template->get_content() );
+		echo $l_obj_template->get_content();
+		// phpcs:enable
 	}
 }
diff --git a/class/layout/init.php b/class/layout/init.php
index c4198df..975fb5e 100644
--- a/class/layout/init.php
+++ b/class/layout/init.php
@@ -130,7 +130,9 @@ class MCI_Footnotes_Layout_Init {
 		printf( '<br/><br/>' );
 		// load template file.
 		$l_obj_template = new MCI_Footnotes_Template( MCI_Footnotes_Template::C_STR_DASHBOARD, 'manfisher' );
-		echo wp_kses_post( $l_obj_template->get_content() );
+		// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
+		echo $l_obj_template->get_content();
+		// phpcs:enable
 
 		printf( '<em>visit <a href="https://cheret.de/plugins/footnotes-2/" target="_blank">Mark Cheret</a></em>' );
 		printf( '<br/><br/>' );
diff --git a/class/task.php b/class/task.php
index d24c403..e2602cc 100644
--- a/class/task.php
+++ b/class/task.php
@@ -1032,7 +1032,9 @@ class MCI_Footnotes_Task {
 	 */
 	public function wp_footer() {
 		if ( 'footer' === MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION ) ) {
-			echo wp_kses_post( $this->reference_container() );
+			// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
+			echo $this->reference_container();
+			// phpcs:enable
 		}
 		// Get setting for love and share this plugin.
 		$l_str_love_me_index = MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_STR_FOOTNOTES_LOVE );
@@ -1078,7 +1080,7 @@ class MCI_Footnotes_Task {
 				$l_str_love_me_text = sprintf( '%s', $l_str_linked_name );
 				break;
 		}
-		echo sprintf( '<div style="text-align:center; color:#acacac;">%s</div>', wp_kses_post( $l_str_love_me_text ) );
+		echo sprintf( '<div style="text-align:center; color:#acacac;">%s</div>', esc_html( $l_str_love_me_text ) );
 	}
 
 	/**
diff --git a/class/widgets/reference-container.php b/class/widgets/reference-container.php
index e1fc4be..16c0af2 100644
--- a/class/widgets/reference-container.php
+++ b/class/widgets/reference-container.php
@@ -72,7 +72,9 @@ class MCI_Footnotes_Widget_Reference_Container extends MCI_Footnotes_Widget_Base
 		global $g_obj_mci_footnotes;
 		// Reference container positioning is set to "widget area".
 		if ( 'widget' === MCI_Footnotes_Settings::instance()->get( MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION ) ) {
-			echo wp_kses_post( $g_obj_mci_footnotes->a_obj_task->Reference_Container() );
+			// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
+			echo $g_obj_mci_footnotes->a_obj_task->Reference_Container();
+			// phpcs:enable
 		}
 	}
 }
diff --git a/class/wysiwyg.php b/class/wysiwyg.php
index 90fb108..671a2d3 100644
--- a/class/wysiwyg.php
+++ b/class/wysiwyg.php
@@ -49,7 +49,9 @@ class MCI_Footnotes_WYSIWYG {
 	 */
 	public static function new_plain_text_editor_button() {
 		$l_obj_template = new MCI_Footnotes_Template( MCI_Footnotes_Template::C_STR_DASHBOARD, 'editor-button' );
-		echo wp_kses_post( $l_obj_template->get_content() );
+		// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
+		echo $l_obj_template->get_content();
+		// phpcs:enable
 	}
 
 	/**