I'm trying to follow the instructions from https://developer.apple.com/help/app-store-connect/manage-submissions-to-app-review/submit-for-review's "Submit an in-app purchase for the first time" section. However, I can't get the “Add In-App Purchases or Subscriptions” dialog to open - there isn't a clickable link in the In-App Purchases and Subscriptions section.
My IAPs seem to be set up properly, they're all in the "Ready to Submit" state.