Hello,
Thank you for contacting Aion Support Team.
We are not aware of any announcement that the players will receive any survey rewards before maintenance, and it's possible that the other players you're referring to were only not claiming their old survey rewards on their characters that come from the previous events that have passed. Unfortunately, we are unable to grant your request in this case, and we can only ask for your kind understanding.
However, if you have other concerns or inquiries, don't hesitate to contact us again.
Regards,
GM Treez
NCSOFT Support Team