First, try to reset the keyboard by clicking on '+' and '-' at the same time and Power up.
I guess that what you tried.
Second, check in the "Stand Alone mode"
==> File/ Audio & Midi Preferences
==> Activ Midi Input Section
Insure you that the keyboard is Well checked.
Third, Send a support ticket and PM me the Ticket number, I will see with your system configuration.