Remove action defined within plugin class - wordpress

Question

I am developing a ecommerce theme.
I have installed the WooCommerce PayPal Checkout Payment Gateway plugin for payment, and I want to change the location of this checkout button, I tried to remove_action display checkout button but it didn't work, How can I remove action in this case?
Hook in plugin file:
plugins/woocommerce-gateway-paypal-express-checkout/includes/class-wc-gateway-ppec-with-spb.php
This is my code in functions.php file, it not works:
function remove_anon_filters( $name, $functionname, $priority ) {
global $wp_filter;
foreach ( $wp_filter[ $name ][ $priority ] as $key => $data ) {
if ( stripos( $key, $functionname ) ) {
remove_action( $name, $key, $priority );
}
}
}
add_action( 'plugins_loaded', 'demo_init', 999 );
function demo_init() {
remove_anon_filters( 'woocommerce_review_order_after_submit', 'display_paypal_button', 10 );
}
// or.
add_action( 'init', 'remove_init', 999 );
function remove_init() {
remove_action( 'woocommerce_review_order_after_submit', array( 'WC_Gateway_PPEC_With_SPB', 'display_paypal_button' ), 10 );
}
Any help is appreciated, thank you.

Answer 1

To remove a non-static method, you should instantiate the class, and remove the action in the wp_head https://developer.wordpress.org/reference/functions/remove_action/
Additionally, the remove_action should be the same priority as the add action, which in this case is not specified.
add_action( 'wp_head', 'remove_ppec_with_spb', 10);
function remove_ppec_with_spb() {
$class = new WC_Gateway_PPEC_With_SPB;
remove_action( 'woocommerce_review_order_after_submit', array( $class , 'display_paypal_button' ) );
}