onepoint0

<?php

add_filter('woocommerce_process_registration_errors', 'clario_override_registration_error_messages', 999,4);

// woocommerce_process_registration_errors fires before the username and email already exist check (so in a sense it is too early),
// however once these checks happen, the code immediate throws an error and returns so no later hooks are available to handle 
// changing the error messages
function clario_override_registration_error_messages($errors,$username, $password, $email) {

    if ( username_exists( $username ) ) {