Hi Carlos,
Thank you for contacting the Microsoft Community.
You may follow the steps in the Vouchers and redeeming discounts page.
If you are encountering issues after following the steps, please send us a PSR (Problem Steps Recorder) showing the steps from the time you sign in to your account up to the page where you are having issues claiming your exam discount. I have initiated a private message where you can attach the PSR along with the requested information to assist you further. Please refer to the image below:
Also, please provide the voucher/discount confirmation email.
I look forward to your response. Please note that if no response is received after two business days, the case will be closed and locked. After the case is locked, we will no longer be able to respond, even through Private Messages. Thank you.
Best regards,
