Hi bether,
Thank you for your message.
As mentioned in our announcement above, it will not be possible to update the previous Cubasis LE 2 full feature set to the upcoming Cubasis LE 3 full feature set!
If you just bought the Full Feature Set IAP, I recommend to get in touch with Apple and ask them for a refund, and to wait for Cubasis LE 3!
Best,
Lars