Hi Kernzz_02,
I understand how frustrating this must be, especially since you still have the original email and code showing that you own the game.
The 12-digit code you received from Mojang appears to be an older Minecraft: Java Edition code, so it cannot be entered on the Microsoft redemption page, which expects a 25-character code.
According to the official Minecraft guidance, you’ll need to contact Minecraft Player Care so the team can verify the code and advise you on the available options.
When submitting the request, please include the original Mojang email, the date you received the code, and any proof of purchase you still have. Please do not share the full code, email address, or purchase details publicly in this thread.
You can also review the official instructions here: How to Redeem a Prepaid Card for Minecraft.
Please note that this is a user-to-user support forum. Moderators and contributors cannot access Minecraft account or redemption systems to validate or replace the code directly, so Minecraft Player Care would be the appropriate team to review this case. I know this isn't the news you were hoping for, but I wanted to make sure you got the most accurate information about your situation. Thank you so much for your understanding.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.