cannot connect to the app store message appears when clicking on apps icon
how to troubleshoot for inability to connect to app store when clicking app icon
iPad, Mac OS X (10.7), i lost my iPad how do i search for
Make sure you are tapping the App Store icon to update your apps, not individual apps.
If that's not the issue, try the instructions for updating your apps by Demo > Apps won't update on my ipad 2?: Apple Support Communities