title: Contact form 7 doesnt send form
body: <p>I use plugin cf7 and use  <strong>Multiline files upload for contact form 7</strong> plugin too
  I add this in form </p>
  
  <pre><code> &lt;div class="files-left"&gt;[multilinefile files  limit:2097152 filetypes:doc|docx|xls|xlsx|ppt|pptx|pdf|png|jpg|jpeg|gif]&lt;/div&gt;
  </code></pre>
  
  <p>and  this <code>[files]</code>  in the Mail File attachments   </p>
  
  <p>when i click <code>send</code> button the contact form shows what is loading, but it lasts forever, and without multilinefiles it works fine</p>