Access to third party payment for in-app purchase

We're going to add subscription module to our app, which is already published and used for free. The problem is: nearly all of our users don't have Visa Cards, Apple cards (or any other ways that Apple require for in app purchase). Our users will use local cards to payments (for subscription as well). Is there any way to have subcription module in app which supports paying with local cards? as far as i know Apple doesn't allow to add 3rd party payments, we're having trouble to find solution. Thank you for your reply!