invalid Serial number

[Norapimentle]

I create my account, in the same day I downland archicad, right in the app, at the moment to create, it ask me to enter with my license, so I wrote my ID and serial number but it says that its invalid, What can I do? I already confirm my data at the site web and its ok, so i don't what its happening. 

[Karl Ottenstein]

Could you clarify if you are talking about an educational / EDU license?