JQuery Element Found but it's not clickable

Very strange... This page is something protected or anything i don't know? I tried to click Next page anchor.

See this page first.

I tried to grab the element using this

var buttonNext = $('a.next-page');

if(buttonNext.length > 0){
    console.log('found!');

    // but when clicking
    $(buttonNext).click();

    // or even no effect at all
    $(buttonNext).trigger('click');
}