Can't find session using advanced sessions

Reading this: Advanced Sessions Plugin

Updated 08/19/2021

Plugin now has two modules, one is AdvancedSessions and one is AdvancedSteamSessions, this will allow me to tie more Steam specific functions in without forcing the steam subsystem to be packaged out with projects that don’t want it.

You didn’t specify that you were using the Steam sessions, hence my explanation. Are both clients connected to Steam?