Text Widget: Facebook Subscribe button not working

Hello,

I am trying to add the Facebook Subscribe Button to my website http://travel-photo-souvenir.com/ but it does not work. I copied the code generated from Facebook and pasted it in the text widget and put it on the sidebar top. I can see the space allocated in the sidebar for the added widget but it is empty. Usually I do it this way on the default theme of wordpress. but with the Esplanade theme it is not working.
Do you have any idea why is this happening ?

Regards,
Kimo