Hi,
you can find answers in our knowledge base for both questions, which are two totally unrelated problems.
https problem: http://help.hotspotsystem.com/knowledgebase/websites-starting-with-https-are-not-forwarded-to-the-splash-page
unresponsive Facebook button problem: http://help.hotspotsystem.com/knowledgebase/what-domains-do-i-need-to-add-to-the-whitelist-for-hotspot-free-social