You have to upgrade to the paid version to access secure websites.
THE LITE VERSION BLOCKS HTTPS, INSTANT MESSENGERS AND GAME CONSOLE TETHERING. IF YOU WANT FULL FEATURES, PURCHASE THE FULL VERSION.
Full app allows https - access to secure sites such as facebook, gmail, online banking etc.
Full app allows you to tether ps3, xbox 360, wii via your PC - enable Internet Connection Sharing on your computer for that.
Full app is $9.99, one-time fee, cheaper than PDANet