I was able to workaround #1 by install fx file explorer (https://play.google.com/store/apps/details?id=nextapp.fx&hl=en_US&gl=US), granting it Storage permission and using it to open files in Manual import mode. Also further found that I have no idea what files the Wizard is actually looking at - thinking it might be in the android partition somewhere.
Click the share button. Share with google drive or file manager +.
Associate .cah with file manager + to 5eCompanion.
Then by tapping on the files 5eCompanion will open and import them.
There should be a mechanism to import and export in the app, but there is not. It's probably on the developer's to-do list.
Here's the file manager. Seriously, the easiest to use I have seen. I have the paid version but I think you can do all that with the free one.
https://play.google.com/store/apps/details?id=com.alphainventor.filemanager