functions.php

<?php

/** ticket 113379 */
if ( class_exists( 'YITH_WC_Points_Rewards_Redemption' ) ) {
	add_filter( 'ywpar_calculate_rewards_discount_max_discount', 'ywpar_calculate_rewards_discount_max_discount' );
	function ywpar_calculate_rewards_discount_max_discount( $max_discount ) {
		return floatval( intval( $max_discount ) );
	}

	add_filter( 'ywpar_calculate_rewards_discount_max_points', 'ywpar_calculate_rewards_discount_max_points', 10, 3 );
	function ywpar_calculate_rewards_discount_max_points( $max_points, $obj, $conversion ) {
		if( $obj->get_conversion_method() == 'fixed')
		$max_points = ( $obj->get_max_discount() * $conversion['points'] ) / $conversion['money'];
		return floatval( intval( $max_points ) );
	}
}