Can’t remove facebook page link from old theme

I am very new to wordpress and I downloaded a theme (authentic theme) and used its demo information to help me keep some structure while I replaced items with my own stuff. I was able to edit all Max Mega Menu information as I wanted, except the facebook page link from the old theme is still there (appears as the cover photo for the page) and I can’t figure out how to get rid of it or replace with mine.

Any ideas please?!?!?