Update: I just randomly figured it out right after waking up!
Solution: All you have to do is create this folder path: "Android/data/com.hoplite.spacehulk/files" create any folders you don't see here on your phone that's it. I was apparently missing a "files" folder within that space hulk folder.
The quickest way to check if this works:
- Open the app after creating those folders
- Click "continue" or "cancel" on the Google Play pop up screen (it doesn't matter which you click apparently)
- Go to settings
- Change the language to any language (perhaps one you can kinda sorta understand enough to change back to your preferred language, Spanish for me)
- Press the "Back" button (or whatever it says now in the language you picked like "Atras") until you're back to the main menu and it'll save
- Sit on that main menu for a couple seconds to make sure it saves the language and close the app completely
- Reopen and see if the language sticks