I paid for kcomplete15 and ozone11 advance with my credit card on the official site of native instruments on November 29.
I didn't know that there was an ozone11 standard on Kcomplete15, so I found out that I can buy an upgraded version of Ozone Advantage instead of a regular purchase.
To get a refund, Ozone advanced has not yet downloaded and registered as a serial.
However, there is no return button in the purchase history.
I'm going to keep using Kcomplete15
Please refund Ozone 11 Advance.