The holiday cheer of some gamers was spoiled on December 24th. Entering voucher codes temporarily produced an error message. As compensation, PlayStation Network subscribers are being offered a $10 free code. https://www.notebookcheck.net/Sony-is-giving-free-PlayStation-Network-credits-for-Christmas-Eve-code-redemption-issues.967611.0.html
I've gotten no such thing and I had issues on the 24th
I would probably give it a few days and then contact PSN support. There are multiple people sharing the same email.
Thanks for the update, Redaktion! It's nice to see Sony stepping up to make things right after that holiday hiccup. It reminds me of the rice purity test (https://ricepurity-test.org/) — sometimes we just need a little reset to keep things fun! I'm looking forward to using that $10 credit on some new games. Happy gaming, everyone!