To use Facebook features (e.g. like, share button) in your eShop website you must connect your site to Facebook.
Creating an Application for website
Go to Facebook developers place and create new application – enter site name and site url. Site url must end with backslash “/” char. Select default locale for your website.
Copy App Secret, got to Admin area Master settings->Core settings->Settings, expand “Facebook” list and enter App Secret into input field “Facebook secret key”.
Now your website is connected to Facebook.
Modifying Application Settings
If you want to modify othe Facebook application settings, go to applications edit page and modify other values.
If in some cases you want to change your website address, you need to modify application settings. Go to applications edit page, select your application and edit settings. Select “Connect” tab and enter new website address under “Connect URL” (dont forget to add “/” to the url end).