Plugin doesn´t works

The plugin doesn´t works with WordPress 3.5.1 and Woocommerce 1.6.6.

The options not appears in woocommerce config page, and when try to search a user by first or last name, sometimes don´t find anything.

Any solution please?

Thanks!

https://ww.wp.xz.cn/plugins/woocommerce-users-custom-meta-search/