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Good morning, we have a backend making calls to the subscriptions API to check the status of users subscriptions. Now, besides the check we need sometimes to extend subscriptions, using the api: https://api.storekit.itunes.apple.com/inApps/v1/subscriptions/extend/{originalTransactionId} To call this api we need a signed JWT Token and the originalTransactionId. Now, calling the api with the concrete parameters we receive always error response like this: StatusCode: 404, ReasonPhrase: 'Not Found', Version: 1.1, Content: System.Net.Http.HttpConnectionResponseContent, Headers: { Date: Wed, 17 May 2023 14:48:36 GMT Server: Apache Strict-Transport-Security: max-age=31536000 X-Frame-Options: SAMEORIGIN X-XSS-Protection: 1; mode=block Content-Security-Policy: default-src 'self' *.apple.com; X-Content-Type-Options: nosniff Content-Length: 196 Content-Type: text/html; charset=iso-8859-1 }; content is 404 Not Found Not Found The requested URL was not found on this server. Consider that the originalTransactionId is taken from the response of a previous verifyReceipt API, and the error does not seem related to the authentication (so I tend to exclude issues with the signed token) What could be the problem? What is the right way to extend a subscription via API call? Thank you.