that will be the result of this issue: https://github.com/openfoodfoundation/openfoodnetwork/issues/3001
For this query you could use the orders endpoint (do not play with this in a live environment if you are super admin because you will be pushing the app a lot by listing all orders in the system):
https://app.katuma.org/api/orders
I know the result has the fields you need: full_name, email, state and distributor.id
I am not sure if these can be used in filters.