Something I can't help but notice about the Cerlica system - it's identical to the Sibelius system. However, Sibelius got it right - they have a hotline phone number manned most of the day. If Cerlica considered doing these activations by phone then they wouldn't be able to blame it on spam.
If they are going to copy a system like this, they should at least do it properly. It's very disapointing seeing as Vantage is such an impressive piece of software.