Can't find my Advanced Session (please help)

Hi, I’ve been searching for a solution in the forums and everywhere else on the internet but i still can’t find a way to make it work.
Basically I am simply trying to get a basic create/join steam session to work but every time I try to find a session it returns with 0 found sessions (lenght of sessions array = 0). I will try to list down below what I have already tried:

  • I did set everything correctly in DefaultEngine.ini ( also bInitserveronclient = true)
  • I did try to look in the logs but i didn’t find anything suspicious, please ask if you want to take a look (the logs say that the subsystem is correctly created).
  • Tried deleting Intermediate and Saved folder
  • Tried creating a steamappid text file in my packaged build

So the thing is: my session is just not popping out. It works just fine in the PIE mode but not in standalone editor and packaged builds. I am using UE 5.4.4, some time ago I tried doing this in unreal 4 and worked just fine… The weirdest thing is that I tried many times with a friend of mine on a different machine with a packaged build and we managed to connect 1 out of 15/20 tries.
I would really appreciate some help, thank you for reading.