[Plugin: Google Analytics for WordPress] Plugin not working suddenly

Hi, this plugin has worked perfectly for months. All of a sudden all my sites are showing like 5 visitors when I know its not the case– I am still number 1 on Google for my search terms, it stopped working 2 days ago. No one else having this issue?

http://ww.wp.xz.cn/extend/plugins/google-analytics-for-wordpress/