Cannot seem to find amazon gift cards.

Amazon.es gift cards are currently absent from the Microsoft Rewards Spain catalog, and Microsoft has not confirmed whether the removal is permanent or announced a restock date.^1^

Microsoft states that gift cards are not always available, offers vary by country, and Support cannot provide details about when a card will be restocked or removed.^2^ Therefore, the practical options are:

1. Keep the points and check the Spain redemption catalog periodically. The Amazon.es card could return, but its return is not guaranteed.
2. Redeem another reward currently offered in Spain if one helps you purchase the microphone elsewhere. The available catalog may include retailers such as MediaMarkt, El Corte Inglés, Carrefour, Apple, or Decathlon, subject to changes.^1^
3. Contact Microsoft Rewards Support if you want your account’s catalog checked or want to submit feedback. Support can investigate account-specific display problems, although it cannot provide a restock date.^2^

Do not change regions or use a VPN to access another country’s catalog. Rewards must be redeemed in the same region in which the account was registered, and redeeming from another market or through a VPN/proxy is not a supported workaround.^2^ Spain itself remains a supported Microsoft Rewards region; availability of individual rewards is separate and varies by regional catalog.^3^

References

1. Redeem - Gift cards – Microsoft Rewards
2. How to redeem Microsoft Rewards points | Microsoft Support
3. Microsoft Rewards regions | Microsoft Support