I'm new to WP. I am currently adding the Ecwid Random Product plugin. I already have the Ecwid shopping cart in my website. After I installed the RP plugin, this message appeared: "The cache directory for Ecwid: Random products plugin cannot be created. Please make sure that directory WP/wp-content/plugins/ecwid-useful-tools/cache/ can be created."
I don't know where to find the directory or how to alter it to make this plugin work. Can someone please help me?