No option to “un-mark” the “Use Yoast SEO settings”

Comment on Technical Support by Lisa Jey Davis.

Hi there: I am using Stallion SEO on my blog site, however, the old site description shows whenever you share my website on Facebook or otherwise. I cannot see where to change this, as the description in my settings are accurate. In searching your tech-support comments, I saw that we can un-check that box to tell it not to use Yoast or WordPress SEO, however, I do not have that option in my Stallion settings. I am not advanced at this stuff. I generally just muddle through and fix things I’ve screwed up as I go… can you help a newbie out? LOL!!!