I'm stuck at registration too, I've read the wiki and tried to search this thread for solution. The problem is that when wazapp went down, I registered my phone number with lumia. Now when I try to register with N9 again I get the fail-too-recent:30. I've deleted my account on the lumia, tried the bluestacks method and my old 3-digits from previous N9 registration. All with atleast 1 hour waiting in between. Bluestacks gives 'SMS verification failed'.
If someone finds a solution please post it asap, thank you!