What version of the Advanced Session Binaries are you using?
The originally released 5.5 binaries didn’t work (due to the engine overwriting the bUsesPresence bool to false no matter what), so a workaround to force the value of it to true was released for the plugin as long a bIsDedicated (the isDedicated option when creating the session) is disabled.
It may be worth deleting your current copy of the plugin files and redownloading the latest (from GitHub directly if you want to make absolutely sure it has the fix in it) and adding those in and opening the engine again to build those plugins.
I did actually make a full process video off the back of this, so may be worth checking you’re not missing anything against the video:
