Settings can be found inside JMBQ.ini, located within the game's external files directory (/sdcard/Android/data/{package-name}/files/).
If you're unsure of your region's package name, just look it up. All of them include "AzurLane" though.
If it has been installed before, then uninstall the original game with Mod Apk. Also change the name of the data & obb game before uninstalling.
Please re -login, until Splash Art appears. Or you need obb