title: Preview mode on Google Tag Manager does not work for me (timeout)
body: <p>I have installed Google Tag Manager on my sites but since the new version of Google Tag Manager, I cannot use the preview option. Each time I click on it, I see my website page opening but get then the following error: &quot;Tag Assistant could not connect to a tag on..A timeout occurred while attempting to connect.&quot;</p>
  <p>How can I resolve this issue?
  Thanks
  Best</p>