Thank you for Your reply. I've found the solution to make all apps work (iOS & macOS) with full features of premium.
I will purchase the premium feature in the Mac App Store, after getting the app by app-store on my Mac I will replace it by the version of Core-Shell app form Codinn Store. And the premium features might be correct & enabled.
This way of migrating is described in this post: Core Shell – Difference between Codinn Store, App Store and Setapp versions
I think, that this solution will work with my iPhone & Mac perfect. What is Your opinion?