Brushing the initial strategy:
Android users need to use the RE file browser (the phone must be rooted) to enter the root directory of the phone (not the SD card)
Delete shared_prefs in data/data/com.bandainamcoent.saomd/
memorise in data/data/com.bandainamcoent.saomd/files/
Remember, if you want to remember your previous account before refreshing again, click on the menu on the main game interface, select Others in the lower right corner, and then select the last item.
Take a screenshot to remember the inheritance code. Next time you want to use it, you can directly enter the inheritance code to enter the previous account.