If you only see a gray space or a message saying "Document preview currently not available" instead of the document preview, you may have to change some settings in your computer browser to see the preview of the documents. 


  1. Go to Setting> Extensions> uncheck "Adblock".
  2. Refresh the page.


  1. Go to Add-ons> Extensions> Disable "Adblock".
  2. Refresh the page.

If you are still having the issue, please restart your computer.