CIMPLICITY iPower Viewer Events list

Hello everyone
I got an error in my iPower viewer apps which are installed in operators systems. when I open Event lists by DemoMenu, a window appears with this message "Events list mode unavailable".
if I ignore this window, events are not complete in comparison with events in server and the other problem is that filter options are locked in this screen too. I thought it caused because of its User and Role so I logged in system by ADMIN user but it didn't work. I would be grateful if someone could guide me in this problem.

Thank You