iOS 7 Beta 5 app update problems

I recently updated to iOS 7 beta 5, and it was said that I had two app that can be updated. I tried to update, and it didn't work! It was stuck at "waiting" and no matter how much I wait, it still doesn't update. Today, I got a total of 5 updates to do. Tried to update, doesn't work either. Tried to reset device, nothing. What's the problem and how do I fix this?

Well, I don't know what I did, but it seems to update fine! I restarted my iPod while connected to iTunes, and while I was searching the store for my apps, I found one app has been updated and the rest are updating. Thanks for your help.