linking

Hi
I have an Arabic site, am using this plugin just to show upcoming events widget, but when I try to tweet an event, the link goes crazy, here is a sample:

ملتقى السفر والاستثمار السياحي السعودي 2013 – مفتاح الرياض http://9661.com/wp/?event=%d9%85%d9%84%d8%aa%d9%82%d9%89-%d8%a7%d9%84%d8%b3%d9%81%d8%b1-%d9%88%d8%a7%d9%84%d8%a7%d8%b3%d8%aa%d8%ab%d9%85%d8%a7%d8%b1-%d8%a7%d9%84%d8%b3%d9%8a%d8%a7%d8%ad%d9%8a-%d8%a7%d9%84%d8%b3%d8%b9%d9%88

How can I fix this please?

http://ww.wp.xz.cn/extend/plugins/events-manager/