Installation steps are incorrect, plugin did not work.

Installed on WP 3.7 but plugin did not work or display in Dashboard Settings. Installation steps are incorrect, as the plugin folder is “advanced-custom-fields-paypal-field” not “acf-paypal-field”. I changed the path in functions.php, but still did not work. Un-installed.

http://ww.wp.xz.cn/plugins/advanced-custom-fields-paypal-field/