Redeem a code from Discord

Well for one you cant redeem a discord code on a xbox its only a pc or mobile app

Follow the link in your email to redeem the code

The problem actually is, i can't redeem the Discord Nitro because it gets a ''Unknown Gift Code'' error (it's the code i got from the xbox), (trying on pc).

There's a few steps to this process but it shouldn't be that complicated, with the majority of stuff that happens going on Discord's end.

In Discord you first need to make the section if you want a code for Console or PC (not both) and afterwards you will receive an email from Discord that contains a 25 letter code that you can redeem in your Microsoft/Xbox account. While the email includes
a link to the redeem site, you should just be able to enter the code anywhere on the Microsoft/Xbox site or even Windows Store aapp where there is a "Redeem a code" option.

For more information Discord have their own guide on how to redeem the code here,

https://support.discordapp.com/hc/en-us/articles/360035344491

You can find instructions on how to redeem Discord codes
here. Since it is for Discord, you won't redeem it through Xbox.

Hi and thanks for reaching out. I hope you’re doing well. I'm an Independent Advisor and a Microsoft user like you and I'll be happy to help you.

Would you mind sending me the exact error you're getting whenever you try redeeming your code?

Here is the promotion page for discord Nitro,
and guide how to redeem it on multiple platforms.