This recipe is an example of how to change and translate localized text strings for PMPro.

change-text-country-email.php

<?php
/**
 * This recipe is an example of how to change and translate localized text strings
 * for PMPro.
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

/**
 * @link http://codex.wordpress.org/Plugin_API/Filter_Reference/gettext
 */
function my_pmpro_text_strings( $translated_text, $text, $domain ) {
	switch ( $text ) {
		case 'Country':
			/* translators: a title above the login input field */
			$translated_text = __( 'Your Translation Here', 'paid-memberships-pro' );
			break;
		case 'Email Address':
			$translated_text = __( 'Your Translation Here', 'paid-memberships-pro' );
			break;
		case 'Confirm Email':
			$translated_text = __( 'Your Translation Here', 'paid-memberships-pro' );
			break;
	}
	return $translated_text;
}
add_filter( 'gettext', 'my_pmpro_text_strings', 20, 3 );