Events plugin do not work as it should be..

Please check the events plugin as it does not work properly under our demo site. http://demo.izmirart.com/diapoint
The hub does not see the plugin as installed..
Also the http://demo.izmirart.com/diapoint/events page does not show anything (as it is page not found)
I have granted support access to you..
You may delete the plugin and reinstall it again if you want..
It does not contain important information..
Please reply asap. Thanks..