Works fine, many thanks!

Adopted in my website for more than one week, so far so good.
To use this plugin, wp weixin plugin need to be installed first, after setting finished,in Woocommerce payment tools page, wechat pay will be showed in the list.
what you need to do is click on-button.

The developer even design some pages for the wechat,like checkout page and call back page, mobile device also work fine.

Thanks.