User avatar in "who's online"

Hello, I'd like to use the script from here: https://help.forumotion.com/t141657-new-log-in-navigation-bar
but at the bottom of the page, in "who's online" (it's working only in the generalities/panel introduction). I tried to replace div names (I know the script refers to id or class name, I noticed it) but something still is wrong.

Version: phpBB3

Hello

Can you post a screenshot of the result you get cause your forum is closed
and by saying something is wrong it is not helping us to understand what is the issue

That code is made for the homepage message