PES Retrieval using aggregation api : data issues

i am using https://app.pendo.io/api/v1/aggregation POST request to get product engagement score, stickiness, adoption and growth values. Even though it shows valid scores and values (non zero) in Pendo Dashboard for a data point, API response contains 0s.
In some cases API response matches with the values shown in the Dashboard.

Request - 

{

    "response": {

        "mimeType": "application/json"

    },

    "request": {

        "name": "PES",

        "pipeline": [

            {

                "pes": {

                    "appId": xxxxx,

                    "account" : “yyyyyy”,

                    "firstDay": "date(\"2025-04-10\")",

                    "lastDay": "date(\"2025-05-09\")",

                    "segment": {

                        "id": “bbbbbb”

                    }

                }

            }

        ]

    }

}

Response - 

{

"results": [

{

"productEngagementScore": 0,

"stickiness": 0,

"adoption": 0,

"growth": 0

}

]

}