If you see an error message after entering your gift card, it could be there's a small typo. Where possible, we'd recommend copying and pasting your code from your gift card to avoid any mistakes. If your code includes hyphens, make sure to enter them too.
It could also be that your gift card has already been used or has expired. In either case, we're sorry to say your gift card will no longer be valid.
If you've entered a valid gift card code correctly and it's still not working, drop us a line at support@itison.com quoting the code in question and we'll be happy to lend a hand!