Stripe - Certain actions does not work

Create an invoice item does nothing, other actions work well.
I guess I don’t understand what ‘Create an invoice item’ can do, reference does not help.
Also, retrieving the User’s Stripe data does not work. For example, I get empty output when writing Current User’s Credit Card’s last 4 digits (I’ve collected his credentials).

I’ve been looking at this as well. As I understand it, creating an invoice (line) item does nothing useful without an additional step to create an invoice - which the plugin doesn’t provide.

I’m also not clear on the Stripe Invoice data type and ‘Get’. It’s not clear how the Stripe plugin is supposed to work with invoices. I wonder if anyone has been able to use it for a full test case (without resorting to writing custom API connector calls).