Hi drdemirel,
Thanks for your message.
As stated in the app descriptions, on our website and in the forum, previous instrument and effects in-app purchases can be freely transferred from Cubasis LE 2 to Cubasis LE 3.
Cubasis for iOS is distributed through the App Store, which is managed by Apple. To get a refund, please get in touch with Apple.
Please keep me updated.
Best wishes,
Lars