To change password, first sign out of the Jiobit app. If already signed out, skip this step. 

To sign out:  Menu > Settings > Sign Out

Once you are signed out, select: 

Sign In (upper right-hand corner) > Sign in with email > Enter email > Click Forgot password

You will then receive an email with the link to reset your password.

If you previously logged in with your Google Account, follow the prompts to reset your Google password.