Deleted plugin overrode meta-data it was not intended for

I was having a problem when posting my article links on Facebook where it was not grabbing the featured image I’d selected as a thumbnail, but random images on the site. I installed a plugin called Custom Image SRC which was supposed to force Facebook to pull the featured image first. It did that but then ignored the meta-data I’d written for the title and description. I deleted the plugin but when I try to post a link now, it’s still acting as though the plugin is installed and active. Any ideas on how to get it back to the way it was before? I still want the image problem resolved, but I also want the link to show with the title and description I wrote for it in the meta-data section. Any suggestions would be most appreciated!! Thanks! Bev Miskus

Here is a link to the site: https://nashvillethreesixty.com/