I saw your website and the source code.
It seems the problem is with the widget itself. I can see a huge code generated by the widget but there is no script in it or may be it has ?
I’m not sure not sure about this, because honestly UFW does not manipulate/alter the widget. It displays the widget as is.
I would suggest using the same widget in the sidebar and see if it works.
My guess is since the widget box is hidden by default, it is not loading/working. I think it is better to check this issue with the widget author.