'Manage Devices' disappeared from iTunes account information.

Hi

I have problem with my app store account. Few days ago I changed my old iphone 3GS for a brand new iphone 5. I deleted my old iphone from my account on app store and registered the new one. But after that, option 'Manage Devices' disappeared from my acoount information on app store and there's no devices.

How can I assiocate my new phone with my apple id? What should I do now? Even the support center can't help me.