Working incorrectly on buttons

Hi!

I’ve been having troubles using the plugin on links placed in buttons and Slider Revolutions buttons. The scroll and offset work correctly on menu items. The buttons are linked the same way as menu items. For reference, please check http://marianrehak.com/goldenprague/ – the buttons are located in the revolution slider, or lower on the page on the left side (button “Ubicación”).

Could you please suggest, what I’m doing wrong?

Thank you