آپ go to Fanpop's ہوم page. Then آپ click on the category that the club is in (device sideways: go to the bar at the سب, سب سے اوپر above all of the featured content. Device vertical: scroll all the way down to "browse clubs") and find the club. And then آپ click the red x that says "leave".
Go to your پروفائل and go to the section کلب (fourth grey button beneath the banner). Find the club آپ want to leave. Hover on the top-right corner of the club's box and a پار, صلیب will appear. Click on that cross.