Reply To: Message by the theme too low priority over other content

Try to add the following code snippet to the Custom CSS area in Theme Settings to fix this issue.

#yith-wcwl-popup-message, .dokan-store-contact .alert-success, .mc4wp-alert, .woocommerce-error, .woocommerce-info, .woocommerce-message, div.wpcf7-response-output {
    z-index: 2000000001 !important;
}

Regards