What changes did you make to get it working? That was a clean project with some basic sessions, so why is it not working? We will try to use 480 app ID.
We’ve tried Epic Games launcher version, Github version and get same issue. connection seems to time out when joining server. Without Steam there are no issues.
We’re using always development builds, both with C++ and Blueprints.
EDIT: We’re having saming issue with 480 app ID: game finds session, but it fails joining.