I'm not all to familiar with Ren'Py on Android. I don't think all Android ports have the second saves location.Well I'm on Android 11, but I can't find any other URM files that store the settings? Is it hidden or inaccessible? Can you share a screenshot of a file like that and what it's named?
You can check from within URM by choosing to save and then in the save dialog press the question mark next to the save button. This will show the save locations the game uses.