Nokia 820 / WP8 Notifications

Hi everyone,

I am newbie here. However I bought a Nokia 820 with WP8 and I think the phone and operating system very good, however I have a serious problem:
Only receive notifications of native applications, ie:
Text messages
Email

All notifications from other applications do not get:
Twitter
Facebook
Viber
whatsapp
Skype
Linkedin

However, I have already checked and notifications active, someone can help me?

Thank you,
Tiago Januário

You can read this thread, it might help: http://forums.windowscentral.com/win...might-not.html