Looks like it’s in the functions.php, lines 1039-1044. If they support child themes, I’d create a child theme first, then change the functions.php of the child theme.
If that’s a bit too difficult, I’d at least make a backup of the original file, and of the new one, in case a theme update would overwrite your changes.
kristboys could just first play with the text in the code and see how that works out?
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