Getting a 403 Permissions error when trying to get Activity Log List

[Stenoosh]

I'm registered my own account and successfully signed up to a subscription. I get a daily summary and can call for the data from activities.
I want to be able to determine if an activity has been created manually on the Fitbit app and ignore those activities. The Fitibit documentation tells me I need to user Get Activity Log List to get a list of activities with the logType data included.
Using CURL to call "https://api.fitbit.com/1/user/-/activities/list.json" with the required parameters returns a 403 error and a message about permissions. I have tried using GET and POST, beforeDate and afterDate and I still get the same error. I am using the same CURL format as my other, successful calls to other endpoints.

Has anyone else had the same problem?

[Stenoosh]

I get the same error when trying to access a list of subscriptions for a user, even though I am using a valid access token. I can get data for activities for a certain date using that access token, and my app has full access scope in the user's fitbit account.