not show facebook login button?

Mindaugas,
I'm not sure what you're asking? The SCLogin module will only show the Facebook or LinkedIn login buttons if you're using our social networking extensions JFBConnect or JLinked.

If you don't have those extensions installed, then the social features will not be enabled as they rely on our other extensions.

I hope that explains, but if you need anything else, just let me know.

Thanks,
Alex