I was just referring to the fact that you should open those ports, I’m not sure if packaging it for production would change the port, but I don’t imagine it would.
That doesn’t sound like something I’ve run into in the past. Unfortunately, without a local repro, we’re unable to take any further action on the issue at this time. It’s not clear why you are experiencing these issues, but at this time I do not believe that it is a bug with the Unreal Engine due to the lack of a local repro.
Have a great day