YoutubeDataAPI - Error 403 Forbidden when get youtube.members.list

[victorchiq]

I am trying to use the endpoint /youtube/v3/members from YoutubeDataAPI, but even after the successful channel authorization with OAuth2, i keep getting the error:

{
"error": {
"code": 403,
"message": "Access forbidden. The request may not be properly authorized.",
"errors": [
{
"message": "Access forbidden. The request may not be properly authorized.",
"domain": "youtube.common",
"reason": "forbidden"
}
]
}
}

The authentication scopes that i used were: "https://www.googleapis.com/auth/youtube.channel-memberships.creator", "https://www.googleapis.com/auth/youtube.readonly"

I get the access_token, but when i call the API (direct in node.js with 'googleapis' youtube.members.list; or with Postman), i still get the 403 error. And yes, the API is enabled in my console.cloud, and my Oauth credential ID is WEB APP.

I tried the same access token that I used to call the /members endpoint for other endpoints an it worked successfully.

How can i solve this? Is there any more settings in the channel that needs to be changed?