I have an American Express gift card and I need to enter a “Name on Card” to buy something, but it’s a gift card and is unnamed?

Exactly what’s in the title. I’m on Etsy and I’m asked the name of the card. I can’t pay without inputting it in. I tried just my name and I’m a minor so I’ve never done this before. There is a user guide with the gift card but it doesn’t explain this.