I'm building a simple PoS embedded app that is supposed to read cart contents when activated. I've followed the tutorials and was able to get the cart contents without any problems.
Unfortunately, after production deployment, the app doesn't have access to the cart. I'm using app.featuresAvailable(Group.Cart) method to get the available features. All of them are disabled.
What are the requirements to have the access to the PoS cart? The user I used for testing has full access scopes. Could it be that the Shopify App requires some specific scopes (I'm using "read_customers,read_orders" scopes)?