Shopify integration OR Pirateship integration

I've made an "exclusive" store by utilizing the direct sales form that I only give the link to my subscribers. It would be even better if this form was password protected, then I could share the link on my website with instructions of how to get the password.

Besides that, orders made in this form are isolated with Beventi. I'd love it if I could integrate all fulfillment to my Shopify store, which is my hub for all my other sales outlets, OR at least integrate it with Pirateship so I don't have to export the mailing addresses, but the export feature makes this rather painless, so it's more of a want/suggestion.

Thank you! I love Beventi!