Why isn't the "Redeem Code" button working when redeeming my Fortnite gift card?

If the Redeem Code button does not work when you try to redeem a Fortnite gift card, try the following steps:

1. Use a private or incognito browser window.
2. Clear browser cache and cookies.
3. Disable background applications like VPN services. 
4. Disable browser extensions. 
5. Use a different browser or device.
6. Use a mobile device with mobile data.

If the issue is still present after completing all checks & steps, you need to submit a support ticket.