Posting here, for every other customer in need.

VineThemes:
Hello dear, we tried but unfortunately it is not working on your website. We don’t know what is happening because it is working fine on our live demo also on our other client website. There must be some plugin that is conflicting.

But how is possible that there’s no way of identifying the root cause? Do you have any debug widget I can install to let the browser console reporting at which step it blocks? It seems the PHP code is not executed at all and the widget content is empty.

Any plans to improve the logic and release updates?