treativa

I would also set up a page as in http://downloads.hbs-info.de/?page_id=202
with the login left to register at the center.
I put the shortcode [wpdm_register_form] but I do not see the form.
I tried to use the shortcode [wpdm_user_dashboard] (http://treativa.it/bozze/chairsandmore/area-personale/) but clicking on register I get this message:
Registration is disabled!
but Download-> settings-> messages is enabled.
What’s wrong?
thank you
federico