I do see a script error thrown:
Uncaught exception: TypeError: Cannot convert 'base.options.slides[vars.current_slide]' to object
Error thrown at line 10189, column 3 in <anonymous function: base.getField>(field) in https://www.selvaggiomoda.com/site/wp-content/themes/wowway/js/plugins.dev.js:
return base.options.slides[vars.current_slide][field];
called from line 8785, column 3 in <anonymous function: base._start>() in https://www.selvaggiomoda.com/site/wp-content/themes/wowway/js/plugins.dev.js:
imageLink = (api.getField('url')) ? "href='" + api.getField('url') + "'" : "";
called from line 8669, column 12 in <anonymous function: base._build>() in https://www.selvaggiomoda.com/site/wp-content/themes/wowway/js/plugins.dev.js:
base._start();
called from line 8531, column 12 in <anonymous function: base.init>() in https://www.selvaggiomoda.com/site/wp-content/themes/wowway/js/plugins.dev.js:
base._build();
called from line 10197, column 8 in <anonymous function: $.supersized>(options) in https://www.selvaggiomoda.com/site/wp-content/themes/wowway/js/plugins.dev.js:
base.init();
called from line 525, column 2 in <anonymous function>($) in https://www.selvaggiomoda.com/site/wp-content/themes/wowway/js/scripts.js:
$.supersized({
called from line 3, column 0 in https://www.selvaggiomoda.com/site/wp-content/themes/wowway/js/scripts.js:
(function($) {
It might be related but I guess it would take a complete rebuild of the theme to even find out why it is happening, if it is related and how to prevent it.