I just installed the theme and am being asked to install the Cornerstone plugin:
" You’re almost ready to start using X. Please click here to install and activate the required Cornerstone plugin."
However, when I click the link in that message, I am taken to a page with this error message: “Unable to install Cornerstone. Destination folder already exists. /home/u189737323/domains/lea-isabelle.com/public_html/wp-content/plugins/cornerstone/”
I followed the installation instructions according to the guide. What do I need to do to resolve this?