How to prepare a new an-app purchase for approving in appstore?

Hi Adapty community!

Trying to publish a new version of the app, where in-app purchases should appear for the first time.

Problem:
If we put a subscription screen with a subscribe button — App Store Review team see crashes, because the Adapty that handles subscriptions doesn't find approved subscriptions in the Connect, it doesn't pull them and the app crashes.

And (as far as I understand) we can't approve in-apps independently (without testing a complete working application).

Question:
How to break the vicious circle:

App Store Review can't test purchases, because in-apps are not approved.
New in-apps can't be approved separately, App Store Review wants to test them already inside a fully working app.

Sorry if this question is off-topic.

Thanks for any advice.