If you haven't utilized your GiftYa in full, no need to worry!
You'll receive credits for each purchase made at the merchant until your gift is fully used. GiftYa has no expiration date.
If there are funds left on your gift, you can choose a different redemption option. To do this, first, disconnect your linked card from your gift. Afterward, select a new redemption option. The available options will vary by merchant and the remaining funds.