Nothing in any of the SLP updates would make any locations spontaneously disappear, something in one of your plugins , most likely your custom theme is breaking SLP.
Just by doing a quick look (“Inspect”) of your site page comes back with ” Uncaught TypeError: g.indexOf is not a function”
and that error is being generated by your theme: http://www.countyfirstbank.com/wp-content/themes/countyfirst-wp/js/KJE.js?ver=1.0
Theme is not following WP best practices (see another forum post and the developer answer on that subject)
Use Firefox to debug, the developer has a tutorial video on the subject
Firefox debug video