I don’t fully understand rejection resolving flow. Sometimes my app being rejected with metadata reason. I send a reply with all the needed information. Then my build is still being in status “rejected” and the button “submit to review” is active even if I didn’t change anything in the build. Am i supposed to submit again or to wait for the answer? Sometimes i receive an answer a couple hours later and the status changes, but usually nothing happens and I just click the submitting button. What is the intended flow?

Hello We're developing an app similar to patreon. The app will allow creators to publish their content on the platform and users to see that content. The content will be available only through the app. Users also can subscribe to the creators and get access to some premium content. So my question is how can I set up this type of payments through the IAP or how can I justify direct link to outside payment form like Patreon. Standard recurrent IAP's are not suitable here. The user can have different amount of subscriptions of different prices, so every month the sum will be different or it will be several different payments.