Changing text in footers-how to?

I have the free version 1.7.7. I want to modify the text in the three footers area below the picture, and before the “read more.” I wrote and published it somehow years ago and now cannot find how to edit the text. Can someone let me know how to do that, and if the free version prevents editing and I need to purchase the pro version? Many thanks!

The page I need help with: [log in to see the link]