Hi there! Sorry for the confusion. The "donation version" of the updated demo contains bonus material as a thank you to purchasers, whereas the old "donation version" did not (hence why the new one is a bit more expensive) and was just a tip.
If you want to email us your proof of purchase, however, we'll make sure to send you a key for the updated donation edition so you don't have to pay twice.
That can be sent to outismof@gmail.com.
Sorry for the misunderstanding, once again.