In ZT Kru template Share icons (Facebook, goole,twitter) don't work.
What's necessary to do except pay for template?
It's not a part of the template.
If you are using k2 CCK, then you must contact K2 provider to ask their support.
Also there are many social extensiosn you can download from JED ( http://extensions.joomla.org/ )
Premium Hidden Content club
Simply Hidden Content for Magento