[lovevn]

2) If the Like Button is ON make sure the content (thread or blog) is visible to guests. vBulletin will not share any page not visible to guests because Facebook needs to scrape the page and it only scrapes public pages.

If the like button is ON and the page is public, post a link to a page where you think the button should be showing. Also disable the More Share Options mod to make sure the default vBulletin Facebook Like button shows. The default Like button needs to show else this mod won't work.

Thanks for your reply. I have tried but the default Like button does not work. I do not know the reason.