integrating In-App Purchases on PWA.

I am trying to launch a PWA as an application on App Store, and got rejected cause of In-App Purchases. Application is about content generation and selling subscriptions for premium content. So thats why needed to implement In-App Purchases.

I have created wrapper via PWABuilder. And it is looking great so far, now my question is about How can I implement In-App Purchases in the bundle which is already created.

Any suggestions will be appreciated.

More clarification:-

I have that product running on Web right now, we have integrated Stripe for payment handling for subscriptions. If there is nothing we can do for In-App Purchases then we have to make purchases on website and then user will be able to experience the changes. We tried that, but then we got rejected for showing locked premium content on user's feed. Also can't show any CTA or Subscribe text or button.

integrating In-App Purchases on PWA.
 
 
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