Advanced Sessions Plugin

I have noticed something very weird. Im using Advanced Sessions to get SteamAvatar, SteamName and SteamID and set those variables inside PlayerState. Then I can save all that and use it for Scoreboard list and NamePlate with Avatar and SteamNames. The thing is that SteamAvatar and SteamID fails. I finally got SteamID using my own C++ Class I found on Youtube and it works really fine but SteamAvatar still fails. I tried to get it using SlateBrush, Texture2D and UniqueNetID.

I keep trying things and have seen that Server can set and print a real NetUniqueID so I get the Avatar.
But when a client join the server, NetUniqueID in server and in new client change to ERROR: BAD UNIQUE NET ID and Avatar is not loaded.

What could be doing that ERROR BAD UNIQUE NET ID?