This is the response of Apple, anyone here published an IOS app with either AliPay or Wechat pay.
I need help in regards with this.
Thank you.
Specifically, we found that your app includes AliPay (支付寶) and Taobao H5 Payments, which provides access to external payment mechanisms and enables the purchase of content, services, or functionality by means other than the in-app purchase API.
You can't use other third party payment methods for the purchase of digital goods/content with your app which is going to be consuming with in the app.
So for that apple recommends the use of in-app purchase.
When can I use third party payment methods?
When cot user in-app purchase?
For more info. regarding this you can check the Apple's official document here