[Plugin: IndexTank Search] installation

Hello,
In the early settings I click on the button “Go to Indextank Settings” then “get one”, wordpress updates … but the message “Go to Settings Indextank” remains.
What to put in the two fields “index parameters”?
Thank you for the help!
Webbud

http://ww.wp.xz.cn/extend/plugins/indextank/