Hello guys, I'm going crazy with this problem, hope someone can help me...

I've installed ibirthday to notify me when a birthday is coming, cuz I don't have many memory for them...it's work well but...when the popup for the notify appear and I press cancell button or sms button, after a little time, it appears again, and keeping doing that...it's weird..it's like it don't register my action. Can someone help me to get throught this? It's quite annoying...

Thx!