If you wish to add a link in footer copyright text, this has to be done in html.

The code would look like this and it would be added in footer.php

This change can be added directly to child theme (just re-create the file footer.php with the changes you wish to make and add in wpresidence-child folder.

If you wish us to provide the child theme file with footer.php open a ticket in client supportĀ http://support.wpestate.org/