Hello there,
Thank you for reaching out to us.
Gift cards are automatically bound to the account that first attempts to use the card number on the official store. Once a gift card is bound, it cannot be used with any other account.
We kindly suggest checking any other accounts associated with your other email addresses, and try placing an order using the gift card to verify which account it is bound to.
We apologize for the inconvenience and truly appreciate your understanding.
If you have any further questions, please do not hesitate to contact us. We are more than happy to assist you.
Have a nice day!
Best regards,
MakerWorld