Christine,
The login redirection in the module is *only* for users logging in using Joomla credentials. Unfortunately, we don't have a way to have separate login redirections for Facebook user's on a per-SCLogin module instance. It's something we're hoping to implement in an upcoming release, but it's not a feature that's been requested very frequently. Hearing the request again helps up the priority though, and it is something that we'll be doing over the next few months, I just don't have a specific timeline as to when.
Until then, the best I can recommend is diabling the redirection in the main component if leaving the user on the current page is something that would work for you, for now.
Hope that helps, and sorry we don't do what you're looking for, yet.
Alex
Redirect to different pages
