Can't get it to work on Drupal 7 site

Have set up an account -- works OK from the website for both Google and Bing. But can't get it to do anything on my Drupal website. Button shows, but when I click it, it just pauses a couple of seconds and shows a small broken image icon to the right of it. Where is the report supposed to be? I can't find anything anywhere to tell me where to look for it. (Though I don't think it's generating one -- doesn't appear in my account on DupeOff.com for instance).
Type: 
Bug
Status: 
Open