At this point, I don't recommend people use the Tesseract theme. It's really a dead end theme.
A better alternative is the free Astra Theme, which allows you to edit the footer with ease.
Also, you may need to install and run a free plugin named Switch To Astra to make all your page builder built pages work out of the box.
And if you really want to see something amazing, check out the free Astra Sites plugin.
I have tutorials on all of this.
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