To reset the password to your web Smart Flow account, please go to the login page, enter the registered email address, and click on Forgot your password? button:

You will then receive an email to that address that explains how to reset your password, please follow these steps accordingly.

NOTE: If you have forgotten your password for the iPad, please login to your Smart Flow account through the web > go to Settings > click on Security and change the iPad password from here. Please read THIS for more details.