Can not find Steam multiplayer Session

Hey there,

I am trying to make a multiplayer game with a lobby from which the player can find available servers. I am using the advanced sessions plugin.
Now when I package my game and play it in standalone, the lobby works great. But as soon as I have steam running and the game (apparently) connects through steam, the lobby stops working and doesn’t find the running server.
Has anyone encountered this kind of issue? Thanks in advance.

ok the problem was apparently that I had to test it on two different machines with two different steam accounts. It works now.