SiteOrigin widgets not showing up in Page Builder

I run a couple sites using page builder and one of them doesn’t list the blue SiteOrigin widgets. I can’t figure out why. I’m referring to the blue ones in the image linked. My site using the Sento Pro theme from Thinkupthemes, does not have the blue widgets yet they are activated over in the plugin area.

URL: https://drive.google.com/file/d/0B0nZwRjYMbx4d2Njd3FmNGtrM00/view?usp=sharing