Update copyright in footer

We’re running theme News Pro, with Genesis & Twenty-Twenty also installed, WP version 5.4.1, Classic editing panels.
We need to update our copyright info in the footer, but two of us spent all day today unsuccessfully trying to figure out how to gain access to it. Nothing appears in any of our “footer” widgets. The word “footer” doesn’t seem to appear anywhere, even in the html code. But, obviously, there is a footer with the copyright info in it, which means there must be some way to find and change it.
Thanks for any help, Merritt & Beth

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