Notability turned to subscription model from V11

But paid users will lose paid functions like iCloud sync, this obviously violates Apple App Store Review guidelines 3.1.2

“ If you are changing your existing app to a subscription-based business model, you should not take away the primary functionality existing users have already paid for. For example, let customers who have already purchased a “full game unlock” continue to access the full game after you introduce a subscription model for new customers.”

please double check the new version of notability