Cubik Studio

I bought the application now i'm trying to register on the application and it keeps saying 'An error occured while checking registration: 502 Bad gateway' 'Be sure that your internet connection works as expected and retry later'

I've turned my WI-FI off and on but still no use.

Are you using a proxy? If so make sure your proxy settings are setup correctly as Cubik Studio tries to use your system proxy settings to communicate with the webserver.