AddThis Social Sharing buttons not showing

Hello,

I’m having problems with the AddThis social buttons, they are not appearing on my site

I have an AddThis account and added the code for the Sharing Sidebar in the “Social Sharing Code” section of the General Options of the Theme Options
I have also installed and activated the AddThis Smart Layers plugin (although I cannot seem to find any screen with configurations)

Am I still missing something?

Kind Regards,

Nadieh