How can I get my scratch card code
Click here and ask the iTunes Store staff for assistance. Supply them with the part of the code you see.
The people on these boards are mostly other customers and won't know the missing characters.
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Please follow the steps in this Apple Support article.
If you can't redeem your Apple Gift Card or App Store & iTunes Gift Card - Apple Support
If after reviewing the article, and following the directions in the article, you need additional assistance please follow the link below to contact official Apple Support.
How can I get my scratch card code
How can I get my scratch card code