Of course, you didn't! I understand your logic, and I am active almost every day but sometimes I simply forget to claim cashback... I forget it's there!

And when it hits me and I check cashback I only see "expired"! Somehow I am sure I will miss it here and there again!
Well, it's the system... I don't like it especially, but I don't have anything against it. Of course, it would be better if cashback can't expire, so we would be able to collect it and get to some significant amount before claiming!
Yeah, I also forget to check it in my account. Although it's worth noting that Betfury sends notifications about it in the right corner of the screen, but it's inconspicuous. I think it would be useful for users if Betfury added email notifications about cashback as an option in the account settings.