AWeber's API has two tiers of application permissions. The first offers access to all resources except for subscriber data. The second has access to all data without restriction.
The two-tiered setup is in place to keep your users' data safe and reassure them that your application is operating in a way they can trust. By default applications use the first, subscriber-less, tier but you can opt your app into the second by following the steps below:
When you enable this feature, your users will see a modified verification page that highlights this permissions level.
Once a user verifies that your application can have access to their account, it will have full access of the data, subscribers and all.