My gift card code wasn’t activated correctly

Greetings, chinedu69.

Since you are having issues with redeeming your gift card, we suggest reviewing the following details. 

“Card is not valid

If you see a message that says that your card is not valid, here's what to do:Make sure that your card is not an Apple Store Gift Card. Apple Store Gift Cards are gray, white, silver, or gold. You can’t redeem Apple Store Gift Cards in the App Store or iTunes Store. Find out what to do if you have an Apple Store Gift Card or don't know what type of gift card you have.Try entering your redemption code manually. When you redeem a gift card, tap or click "You can also enter your code manually." Make sure that you enter the redemption code that begins with "X", not a different number on the card.Make sure that you enter the correct characters. Some letters and numbers look alike, such as:B and 8D and OE and 3G and 6O and QO and 0S and 5U and VZ and 2

Card has already been redeemed

If you see a message that says that your card has already been redeemed, you might have already redeemed it. Sign out of the App Store or iTunes Store on all of your devices, then sign back in. This refreshes your Apple ID balance. Learn how to check your Apple ID balance.If you need more help, contact Apple Support. Card is not activated

If you see a message that says that your card has not been properly activated, it might not have been activated by the retailer who sold the card. The best option is to go back to the retailer and try to resolve it with them.If you need more help, contact Apple Support.

Code is unreadable

If you can't read the code on the back of your card because it's scratched or damaged, contact Apple Support. Code must be redeemed in a different country or region

If you see a message that says the code must be redeemed in another storefront, the card was probably purchased in another country or region. You can't redeem Apple Gift Cards or App Store & iTunes Gift Cards outside of the country or region of purchase. For example, if you bought an App Store & iTunes Gift Card in France, you can't redeem it in the App Store in the United States.If you need more help, contact Apple Support.” If you can't redeem your Apple Gift Card or App Store & iTunes Gift Card 

Should the issue continue, you’ll want to work directly with Apple to ensure that your gift card remains secure. Contact - Official Apple Support

We hope this helps! 

Sincerely.