Getting 403 "insufficient_permissions" on token request

[getrealhealth]

Here is the error we get for our clientID 23PQ7P on the token request. Please advise what could be the cause.

{
"success": false,
"errors": [{
"errorType": "insufficient_permissions",
"message": "API client is not authorized by Fitbit to access the resource requested. Visit https://dev.fitbit.com/docs/oauth2 for more information on the Fitbit Web API authorization process."
}]
}

[getrealhealth]

Hello, can someone help me with this in this forum? I had posted this in the Web API development forum, and reached out to Fitbit customer care team, but did not get any useful information. Google support created a case number and pointed me to the SDK Development forum.

Basically, the token request is erroring out with a 403 "insufficient_permission" error. Everything about the application registration seems to be correct but still keep getting the token request error.

[Gondwana]

I don't think you'll be able to get any help in this forum because you're not using the SDK. The Web API forum is your best chance.