First of all, a gift card must be purchased for the region in which you are staying or the one to whom you would like to gift it.
If you are sure that the region is correct and you made sure that someone else did not redeem the gift card, but an error occurred while redeeming the code, then create a support ticket on our website: https://help.coinsbee.com.
Please send us a Screenshot where we can see the code and the error message. Then we can check this case with the supplier.