In order to reset your Softgiving you first need to have previously created an account at app.softgiving.com.
From the login screen, if you forgot your password, click "Forgot your password?"
And then enter your email address when prompted:
Follow the steps in the email you receive to reset your password. Be sure to check your spam folder if you don't see the email within a few minutes of making the request. Having issues? Email firstname.lastname@example.org for further assistance :)