Game Review API Links Are Broken?

Hello,

I am currently in the process of writing an application that reads from Gamespot's API, and I have found games' reviews_api_url links do not lead to their reviews. For instance, "Ultima Collection", id 2221 with reviews_api_url https://www.gamespot.com/api/reviews/?filter=association%3A5000-2221, does not lead to results containing the review with id 2531653. Neither does "Uprising 2: Lead & Destroy", id 166 with review_api_url https://www.gamespot.com/api/reviews/?filter=association%3A5000-166, lead to review 2531739. Am I doing something wrong with searching for reviews (yes, I am including my API key)?

Thank you