Hello Ernie,
I have followed basically all the guides you have available on this issue.
1) I created a test manager account in order to be able to create test user accounts because this is the only way of doing that correct?
2) I have a live manager account with a dev token which is what I am using in order to query the test accounts. However I still get access denied.
3) I have a GCP project where I have the OAUTH credentials and consent screen setup.
4) I am using the following data:
developerToken - Unapproved token from the live manager account
clientId - Coming from the OAuth credentials
clientSecret - Coming from the OAuth credentials
refreshToken - Taken by authorizing APIs using OAuth Playground
clientId - Using the client ID from the test account that I want to query. See screenshot below.
I have already asked for a dev token review. However I would like to be able to understand the system and query test accounts for future development cases. Some guidance would be greatly appreciated. Thanks for your time.