title: Heroku add certificate for app on EU region doesn't works for *.herokuapp.com
body: <p>Following <a href="https://devcenter.heroku.com/articles/ssl-endpoint" rel="nofollow">https://devcenter.heroku.com/articles/ssl-endpoint</a>
  I've added a certificate for my domain <code>www.example.com</code> and then <code>https://www.example.com</code> is working as expected.</p>
  
  <p>But the domain of my certificate is <code>example.com</code> and it's not valid for <code>my-app.herokuapp.com</code> so the browser shows an error message of invalid domain for certificate.</p>
  
  <p>I've seen <a href="https://support.dnsimple.com/articles/heroku-error-ssl/" rel="nofollow">https://support.dnsimple.com/articles/heroku-error-ssl/</a> but it's not valid on EU region. In fact I don't understand how it works, because the custom SSL endpoint they provide to us still has an other domain: <code>herokussl.com</code> so my certificate will not be valid for this domain.</p>
  
  <p>Any ideas?</p>