While checking your site it seems that the issue may have been caused due to the plugin installed. Can you once check by disabling the SiteOrigin Widgets Bundle plugin and confirm it? Let us know if the problem still persists.
For solving the above-mentioned problem you can use the slider available in our theme and remove the slider from SiteOrigin. You can activate and use the SiteOrigin Widgets Bundle plugin for other customization.
Our theme supports only one slide on the home page. If you want two sliders then you can use the SiteOrigin Slider and disable our theme slider. For disabling the theme slider you can go to Appearance > Customize > Slider > Activate Slider and uncheck the checkbox.