API V3 403 Forbidden

My was working 30 days ago and now I am running into trouble.

I was using a GET request for the following API:

https://api.cc.email/v3/contacts?status=deleted,unsubscribed&include=custom_fields&limit=500&include_count=false

I successfully retrieve the access token, but when I retrieve a Status 403:

{
"error_key": "access_denied",
"error_message": " Request forbidden due to insufficient authorization scopes."
}

Last time I came across a similar issue there was an issue with some fo the certificates that had to be updated. 

Any assistance to help trouble shoot would be greatly appreciated.

Thanks.