Please analyze the HTTP response closely - the HTTP error code, the message, and the unique Cogniac error code at the end of the message string. If you can match the unique error code to the Error Code section of our API Documentation (https://cogniac.readme.io/docs/api-errors), you can find detailed error messages.
Also check the API status page https://cogniac.co/status/ and @CogniacHQ to confirm that the API is online and functioning properly
If you're still having issues, please reach out at support@cogniac.co with a detailed summary and we'll quickly follow-up!