Hi again Layanie 🙂 We see from our logs, that something went wrong in the internet communication between you and our server. Your activation key seems to be correct, and our server did approve it, it’s just that that message somehow didn’t go through to you properly.
Anyway, could you try it again – using the same activation key – and let me know what happens?
When you run Animation Paper after you installed it, a small window comes up where it asks for your activation key. In that same window there’s a link. Just click that link to register and you will get your activation key right away.