Facebook login button not working

Hello,
I just purchased and installed the latest version
but the Facebook login button does not work (I am testing on Windows 10 + Firefox)

You may test here: accademiainfinita.it/accedi

In the browser console I see this error:

Uncaught ReferenceError: FB is not defined
facebook accademiainfinita.it/components/com_jfbc...jfbconnect.js?v=6:42
provider accademiainfinita.it/components/com_jfbc...jfbconnect.js?v=6:33
onclick accademiainfinita.it/accedi:1

Thank you

Alright, I did a bit more testing and it's definitely some extension in my browser causing this issue, you may mark this as resolved.