WP-Nelo: can’t display sidebar widget on subpage

My blog has the WPNG calendar plugin working (both on the "Calendar" subpage and as a sidebar widget on the main page):


How do I get the sidebar widget working on the "Calendar" subpage – so that it has the same "Upcoming events" in the sidebar as the main page? I tried clicking on the "All you need to do is to visit your widget tab replace this with your widget" link and it directed me to a login page that I couldn’t log into (my normal "admin" login didn’t work).