Android 13 on Alldocube tablet. Downloaded Berserk_13 from SourceForge, ChessEnginesforAndroid.
No problem with Droidfish 1.90 or ScidOnTheGo 1.55, but I can't figure out where to put the engine executable so it will be accessible by ChessforAndroid 6.9.0. Tried version 6.8.2, same deal.
A youtube video shows what a populated engine list looks like. I am seeing the exact opposite.
Scanned through 406 msgs resulting from a search on the term 'abik'. Did not notice anything relative to the situation (but I could have missed something!).
Though I am capable of any degree of dumbness, the possibility asserts that auto discovery is not going to work on this tablet. The file is now in several locations, including Main_Storage/Android, Main_Storage/Android/data, Main_Storage/Download, and (har) Main_Storage/Chess_for_Android. Some obvious blunder here?

I see what appears to be a pretty exhaustive stash of releases of Chess for Android at https://aart-bik-chess.en.uptodown.com/android. Hoping that it is not faux pas to inquire the last release that allows import from external media. I could try that as an experiment.
thanks for help
Poltrune