About plugin wp pagenavi

Hello,

I'm using plugin wp pagenavi http://wordpress.org/plugins/wp-pagenavi/

I'm stuck in how to make the plugin working in Tag page. I have asked plugin author here: http://wordpress.org/support/topic/not-working-in-tag-page?replies=2

They have the solution for this issue but i'm not expert in this case. Please guide me step by step how to resolve this? Also i have grant access in order to you want to login to take a look.

Thank you,
Tuan.