Troubleshooting Mixpanel API for User Engagement Retention Reporting

Hi, I’m trying to pull data using the "https://mixpanel.com/api/query/retention" API for a user engagement retention report covering approximately 200 online courses. To address the API rate limit issue, I attempted to fetch data in batches (e.g., 10 courses per batch), but I’m still encountering the same error. Is there an alternative API or method I can use to retrieve this data effectively?