Commander doesn't open directories in onx boox

[Invariant]

It used to work but now I can't access the internal shared storage and external sdcard. I can access the root system but going into storage, mnt, etc and I can't go into the drives. It has full storage permissions.

From what I recall there was something mentioned about some restrictions in some update but I don't remember and I haven't used it much. The build in file explorer works.

I updated to recent and same problem. Is there any way to fix this? Maybe force permissions using adb? (I remember seeing somewhere some hacks that could be set)

[ghisler(Author)]

The problem is caused by Google restrictions:
There are two ways to access files:
1. Direct access to the file system (file:// url)
2. Access to files shared by other apps (content:// url)
In newer Android versions, Google is restricting direct access to the file system to just a few app types, like file managers or backup tools. All others have to use a file picker, which then returns a content url shared by the Android file manager.

Therefore when you click on a file in Total Commander now, it sends it to the called program as a content url. If your book app can still access file urls, you can create an internal association in Total Commander where you disable the "content://url" option to still send file urls to that app.