I recently downloaded the ios7 and now my notifications won't work, I've tried everything

I downloaded the iOS7 two days ago, and my push notifications don't seem to work at all. When my friends message me on kik, whatsapp or iMessage i don't receive anything. I've tried rebooting, changing the wifi setting to 8.8.8.8, connecting it to my computer, resetting the settings and I'm still in the same situation.

If anyone can help it would be much appreciated as this is very frustrating.