Why is verification required thing popping up when I'm trying to update my apps

dear Apple I'm trying to update some of my a and it says verification required. The apps I got didn't cost money. Those apps were free. The worst part is that my iPad has this ******** program called eSpark. they block to much stuff. They request to many education apps. If anyone knows how to fix this let me know.Anothe thing is that I have no none option. And it says your card was declined try a different pay method. OMG APPLE FIX THIS AND COME OUT AND RELASE IOS 8.4! YOU BETTER FIX VERIFACTION REQURIED TO MAKE THAT ATOP POPPING UP WHEN IM UPDATING MY APPS.