Cant redeem Xbox code on Xbox and on Microsoft

Whenever I try to redeem my Xbox code on Xbox it tells me "Something went wrong. Please try again later". And when I try to redeem it on Microsoft it tells me "Check the instructions that came with the code. You might need to redeem it on a different website or device, or you might not be eligible to redeem this code." I have no idea what to do, I already tried the most common things like, literally buying another code thinking that its wrong or bad, I tried re logging into my account, I tried incognito, I followed every single step without mistake and nothing worked. What can I do