How to Force Admin to English after Auto Translations

To force English Only on the Admin screen for either all users with access to the admin screens or for just individual users – use the process below. You will need access to the files on your server either through CPanel, FTP/SFTP, or a file management plugin.

1. In wp-content/plugins create a folder and call it english-only-admin
2. In the new folder create a file named english-only-admin.php

3. To force English for all admin users, copy the code from here and paste it in the file: https://developer.wordpress.org/reference/hooks/locale/#comment-content-1826

   If you want to only force the language for specific users use the version of the code below instead. Replace ### with the user id of the admin user, or a comma-separated list of user ids. 

<?php
/*
Plugin Name: English Only Admin
Plugin URI: http://your-domain.com
Description: Force English (en_US) in the WordPress Admin
Version: 1.0
Author: You
Author URI: http://your-domain.comText 
Domain: englishonlyadmin
*/
// prevent direct access
if ( ! defined( 'WPINC' ) ) {
    die;
}
if ( ! function_exists( 'uniquePrefix_force_english_only_admin' ) ) {    
/**     
 * Override locale for admin to force English (en_US).     
 *     
 * @param string $locale Current locale.     
 *     
 * @return string English (en_US) locale if in Admin, configured locale otherwise.
 */
    function uniquePrefix_force_english_only_admin( $locale ) {
	$english_users = array( ### ); //REPLACE ### with the user id, or a comma seperated list of user ids
        // detect when we are in the admin dashboard and force english
        if ( is_admin() ) {
 	    $u = get_current_user_id();
  	    if( $u && in_array( $u, $english_users ) ) {
	        $locale = 'en_US';
	    }
        }
        return $locale;
    }
    add_filter( 'locale', 'uniquePrefix_force_english_only_admin', 99999, 1 );
}	

4. Save the file
5. Go to the WordPress Dashboard -> Plugins screen
6. Activate the English Only Admin plugin