RedSys Gateway | Pasarela Redsys para WooCommerce

Buenos días, José. Tenemos un Woo en PHP 8.2 y como es lógico con los cambios en la API del lenguaje, nos está emitiendo estos warnings de tu plugin. ¿Serías tan amable de refactorizar un poco para esta versión y que desaparezcan?
Gracias.

AH01071: Got error ‘PHP message: PHP Warning: Undefined array key “multisitesttings” in /opt/bitnami/wordpress/wp-content/plugins/woocommerce-gateway-redsys/classes/class-wc-gateway-redsys.php on line 56; PHP message: PHP Warning: Undefined array key “ownsetting” in /opt/bitnami/wordpress/wp-content/plugins/woocommerce-gateway-redsys/classes/class-wc-gateway-redsys.php on line 57; PHP message: PHP Warning: Undefined array key “hideownsetting” in /opt/bitnami/wordpress/wp-content/plugins/woocommerce-gateway-redsys/classes/class-wc-gateway-redsys.php on line 58; PHP message: PHP Warning: Undefined array key “secret” in /opt/bitnami/wordpress/wp-content/plugins/woocommerce-gateway-redsys/classes/class-wc-gateway-redsys.php on line 69; PHP message: PHP Warning: Undefined array key “hashtype” in /opt/bitnami/wordpress/wp-content/plugins/woocommerce-gateway-redsys/classes/class-wc-gateway-redsys.php on line 73; PHP message: PHP Warning: Undefined array key “redsysbanktransfer” in /opt/bitnami/wordpress/wp-content/plugins/woocommerce-gateway-redsys/classes/class-wc-gateway-redsys.php on line 102