Gift certificates are refundable, that is, the holder who has not activated (as well as activated) and has not used (partially or completely) the Gift Certificate has the right, by presenting the Gift Certificate and writing a corresponding application, to return the funds paid for the Gift Certificate or the remainder of the nominal value (with the exception of gift certificates transferred as a gift).
The application for a refund of the funds paid for the gift certificate (or the remaining face value) is considered within 10 days and the funds are returned within the same 10-day period, while the gift certificate is withdrawn from the holder.
More detailed rules for using certificates are described
https://warpoint.ru/gift_rules