Appointments+: Automatically trigger Paypal button once confirmation is done

app-hacks.php

<?php

add_action( 'wp_footer', 'apppointmens_hacks_scripts', 20 );
function apppointmens_hacks_scripts() {
	if ( wp_script_is( 'app-shortcode-confirmation', 'enqueued' ) ) {
		?>
		<script>
			( function( $ ) {
				$(document).on("app-confirmation-response_received", function() {
					var paypalForm = $(".appointments-paypal > form");

					if ( paypalForm.is(":visible") ) {
						$(".wait_img").show();
						paypalForm.hide();
						paypalForm.trigger( 'submit' );
					}
				});
			})( jQuery );
		</script>
		<?php
	}
}