Facebook Events disappearing after some time


I have run into another problem with the facebook event widget. The events for the pages we display is not always availible. When we log into the user who have the extended permissions though, the events show up again. But after some time the events will disappear once again.

Do you have any idea as to how we can keep the events shown on the site all the time?

I have attatched 2 pictures from 2 different times to show that it disappears after some time