Skills tab missing in ledgard theme
According to details page description Index page included sections Skills.
Please check the theme documentation hopefully you will get necessary support. If you have still problem with the theme then The best way to get the support is Contact your purchased Theme Author. Contact Author because Item Author are best expert about their Item functionality. Don’t worry just contact Author. Author will be very happy to assist you.
Also you can check your theme Option if you find anything related to the issue.