easiest way to register to wazapp!!
No need to switch the simcard from n9 to another device.
borrow a symbian/android/iphone/windowsphone/bb.
open whatsapp, while registering give the phone number of the sim u have in ur N9. u'll get the code directly to N9. enter the code manually in wazapp and enjoy!
it worked for me hope it'll work for u as well!
let whatsapp block wazapp registration! but there is no one who can block this amazing community!!

Cheers!!
Karthik