Wouldn't hold your breath, I had the same thing where I'd queried it last year and was told there was nothing to do at that time but would be notified if there was going forward - the response I got last week when I chased off the back of the "you may have missed the email we didn't send" email was "having offered coupons in previous years is not a guarantee we will always do this, it's your responsibility to check the assessment portal, $50 please".