I have a integration in zapier. But the problem is oauth authentication is not working.I have tested authentication in platform UI i get the access token, refresh token,user values that i send from my app to zapier.I receive correct responses but after accessToken expires zapier account says the account is expired. What is the problem.I use node-oauth2-server to implemnt oauth in my app. I have tested using postman for refresh_token endpoint and it works correctly.Cn you please suggest any slutions as to test my refresh_token endpoint using zapier platform UI or zapier CLI

Thank you.

My Response is as follows in access_token endpoint and refresh_token are same

{
    "access_token": "",
    "access_token_expires_at": "2024-08-19T07:34:23.871Z",
    "refresh_token": "",
    "refresh_token_expires_at": "2024-09-02T06:34:23.871Z",
    "scope": "read",
    "client": {
        "id": ""
    },
    "user": {
        "id": id,
        "email": "email",
        "name": "name"
    }
}

I tried using platform UI and zapier CLI but the connection after access_token expires always return expired