Snippet to change Access Point name on checkout field. WOOCOMMERCE UPS SHIPPING PLUGIN WITH PRINT LABEL - https://www.pluginhive.com/product/woocommerce-ups-shipping-plugin-with-print-label/

functions.php

/**
 * Snippet to change Access Point name on checkout field.
 * Created at : 11 Sep 2018
 * Updated at : 11 Sep 2018
 * PluginHive Plugins : http://www.pluginhive.com/plugins/
 * Gist Link : https://gist.github.com/varun-pluginhive/b048f5b225f0182211afdbc0c6d15362
 */

if( ! function_exists('ph_customize_access_point_name') ) {
	function ph_customize_access_point_name( $fields ){
		if( ! empty($fields['billing']['shipping_accesspoint']) ) {
			$fields['billing']['shipping_accesspoint']['label'] = 'Access Point';	// Replace Access Point with name of your preference
		}
		return $fields;
	}
	add_filter( 'xa_checkout_fields', 'ph_customize_access_point_name' );
}