@katarzynamos Reply from the support as much as it was polite and informative didn't bring much to the problem. I Made sure that the cashback was active, made the purchase within one session, didn't use any other cashbacks, there was a pending cashbacks from adobe at the time I made the purchase (I was checking if cashback is set properly). Support said there is no history of me visiting any store with cashback which is odd. I mean I'm not saying that in the end it might have been something I overlooked but for an feature that seems to be (while logged in to opera cc on your opera browser) click and done, it did fail me greatly, considering it was a quite a big purchase too.