Reorder gateway list on the checkout page in marketpress

code.php

<?php

add_filter( 'mp_payment_options_array', function( $options ) {
	$temp = array();
	$temp['paypal_express'] = $options['paypal_express'];
	$temp['stripe'] = $options['stripe'];
	$temp['manual_payments'] = $options['manual_payments'];
	
	return $temp;
}, 10 );