While version 10.8 is an older release (current versions have reached 10.9 and beyond), the license system remains consistent.
“I used a crack for Synthesia 10.7 and my bank account was drained two weeks later. Not worth it.” – Reddit user (r/piano) Synthesia 10.8 Unlock Key
There is only one safe, legal way to unlock Synthesia 10.8: purchase a Learning Pack license from the official Synthesia website. While version 10