I find in document https://help.apple.com/app-store-connect/#/devb57be10e7 Last sentence in tip2's paragraph 2. "See Add an in-app purchase to use App Store Connect to add your in-app purchase, or App Metadata Specifications to use XML." So, Apple only supports creating product by XML or Manually(App Store Connect) ? Is there any good practice for Live stream subscriptions?(Every streamer could be subscibed, and every one could be a steamer, that means the auto-renew subscripion products could be many and dynamically)?