The forgot password and forgot username links are based on what you have set the 'Registration Component' option to. If you're just using Joomla Users component as the registration, it will go to the standard registration view at index.php?option=com_users&view=registration. There's not currently a way to override the links. However, if you'd like to change them with a code workaround, you can look at the getPasswordAndProfileLinks method at line 189 in the /modules/mod_sclogin/helper.php file.
-Melissa