Android 11 focuses a lot on security and privacy. There is a new approach to access files on the system, similar to iOS.
It is Scoped Storage. https://developer.android.com/about/versions/11/privacy/storage
"To give users more control over their files and to limit file clutter, apps that target Android 10 (API level 29) and higher are given scoped access into external storage, or scoped storage, by default. Such apps have access only to the app-specific directory on external storage, as well as specific types of media that the app has created."
Piktures used to store the Secret Space in a directory outside of its app.
The Secret Space photos are impossible to access by any other apps. There is no longer the risk that another app deletes them. This was happening to some users. Some Cleaner apps were deleting the Secret Space to "save space" which was causing our users to lose their riles
The Secret Space is now stored on the Piktures dedicated space on the device. It means it is fully secured and not accessible by any other apps. It only means that if you delete Piktures, you delete your Secret space as well.