WB account is the only way to make a backupI don't know how to make backup at my account. If i uninstall game i lost my account. If you refer at login data, my login doesen't work. I tryed many times. That's why i installed on old mod.
What happens when you try to login with your WB account? can you take screenshot of the error if any?
I'll try to help you getting your data backed up to your acccount