You have a major issues regarding the slider and iPad devices. I have not tried other tablets yet.

These are affecting your demo files on ThemeForest as well.

Screenshots included are 2 taken from my personal iPad. Although, i do not recommend using an emulator to test the link is below.

Please provide a fix/update for the template.

Emulator: http://alexw.me/ipad2/#!safari (address used to test: http://demo.snstheme.com/sns-senia/index.php/?___store=english )