I attached an example to the question, and now my client says it's privacy sensitive and asks me to remove it.

What's the idea of not being able to edit or delete your question?

The correct solution was posted by @klaytonb, it has a single source of truth - FocusState and the Binding that reflects it.

Nice "recommended solution", thanks!

You saved my day! That's not obvious.

I checked the link and it recommends to use AppTransaction with originalPurchaseDate to verify the trial. I'm not sure if it complies with the guidelines because they tell that "Prior to the start of the trial, your app must clearly identify its duration, the content or services that will no longer be accessible when the trial ends, and any downstream charges..." But I've seen quite a few apps using silent trial there. I guess depends on the reviewer.

@Cos88, was you able to pass the review?

I added a video with captions explaining the app flow. App was finally approved! 🥳

Thanks for help! Still need to figure out indexing - maybe I simply need to wait?