1. Did you lock your feeds?
After setting up the metering at the app level, you need to choose which feeds you want to apply the metering to and lock those feeds. Navigate to the applicable feed and click on "Settings." Under the "Access" setting, make sure that the feed is changed to "Locked." Keep the Subscription/Paywall box checked (as well as any other applicable options) and once you save the feed should lock dynamically.
If you continue to have trouble getting the metering active in your app, contact us at firstname.lastname@example.org!