Unable to Delete Plugin

I too tried the plugin. Did not work for me the way I had hoped. So I deactivated it. Tried to delete it, but that failed. So I used an FTP client to delete the whole folder: wp-content/plugins/woocommerce-molds from my wordpress directory and that seemed to work. I no longer have it in my admin plugins page and no longer see it in the admin products tab. Maybe that can work for you too?