Duplicator Pro

The message ‘Blocked’ is displayed on newly installed site:

One.com has a special policy to reduce spam on WordPress websites which can interfere with migrated sites.

To get around this, add the following to your .htaccess file:

RewriteEngine OnRewriteCond %{REQUEST_URI} ^/RewriteRule .* - [CO=wordpress_test_cookie:WP+Cookie+check:%    {HTTP_HOST}:1440:/]    

Reference: Guide on One.com