Members-only Shop

I am trying to create a members-only shop, so the entire site is behind a password.

Currently I am using the standard perch_shop_registration_form(); for a customer to create an account and choose a password etc. This is working fine.

But I want to approve the customer using the members app before they can log in. So I have ticked the New members require approval box on the Registration form in Members in Perch.

Now when someone fills in the form I am getting an error in debug - Invalid address:.

But they are being created as a pending member, which is what I want. They are not being created as a customer in Orders > Customers, however. Now when I approve them and log in using their credentials they are being created as a customer, which again is fine.

But when I call perch_shop_customer_addresses();, there is nothing there, which makes me think they are not being created properly as a customer, possibly due to Members stalling the process?

Help with this would be appreciated - all templates are from the initial set, and it is a totally fresh install. End goal is a shop site behind an admin-approved login, where when potential customers apply they are created as a pending customer, so once approved their address etc. is already listed to use.