Hi, chillydoc!
Here are a few things you could do, in case you didn't already:
Go to App Store - Featured, scroll down to your Apple ID, tap it and sign out. Then sign in again with your Apple ID.
Check your connection/s - Wi-Fi and/or cellular: open Safari and try to access a random website. If it doesn't work, you'll know that you have to search for the solution to your problem there.
Force close the app:
iOS 6: double tap Home button/four or five finger swipe upwards to reveal multitask bar, then tap and hold an app icon until they all start to wiggle, delete them.
iOS 7: same procedure to reveal multitask bar, then slide thumbnails above the app icons towards the top of the screen.
I suppose your iPad shows the right date and time. If not, change this.