Hi TheRegularGuy,
Since the same error occurs with both the Super Duolingo and Spotify offers, and neither attempt appears in your Order history, this does not necessarily mean that the individual coupons are invalid. It appears that the redemption request is failing before an order can be created.
Please note that this is a user-to-user support forum. Moderators and contributors cannot access your Microsoft Rewards account or review the redemption system from here. As the checks in the previous answer did not identify a completed or pending order, the appropriate next step is to submit a request through Microsoft Rewards Support.
When completing the form, include the screenshots, the approximate date and time of both attempts, and mention that the same “Couldn’t complete your order” message appears for two separate offers while Order history remains empty. Please hide any personal or account information from the screenshots.
The Rewards Support team can review whether an account, region, offer availability, or redemption-processing issue is preventing the orders from being created. 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.
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